diff --git a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java
index 32572b498b..7ed3d913ea 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java
@@ -59,6 +59,10 @@ public enum SQLBinaryOperator {
     NotILike("NOT ILIKE", 110),
     AT_AT("@@", 110), // postgresql textsearch
     SIMILAR_TO("SIMILAR TO", 110),
+    POSIX_Regular_Match("~", 110),
+    POSIX_Regular_Match_Insensitive("~*", 110),
+    POSIX_Regular_Not_Match("!~", 110),
+    POSIX_Regular_Not_Match_POSIX_Regular_Match_Insensitive("!~*", 110),
     
     RLike("RLIKE", 110),
     NotRLike("NOT RLIKE", 110),
diff --git a/src/main/java/com/alibaba/druid/sql/parser/Lexer.java b/src/main/java/com/alibaba/druid/sql/parser/Lexer.java
index 93425c35a3..9a1b6fec21 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/Lexer.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/Lexer.java
@@ -626,6 +626,14 @@ public class Lexer {
                 } else if (ch == '!') {
                     scanChar();
                     token = Token.BANGBANG; // postsql
+                } else if (ch == '~') {
+                    scanChar();
+                    if (ch == '*') {
+                        scanChar();
+                        token = Token.BANG_TILDE_STAR; // postsql
+                    } else {
+                        token = Token.BANG_TILDE; // postsql
+                    }
                 } else {
                     token = Token.BANG;
                 }
@@ -636,7 +644,12 @@ public class Lexer {
                 break;
             case '~':
                 scanChar();
-                token = Token.TILDE;
+                if (ch == '*') {
+                    scanChar();
+                    token = Token.TILDE_STAR;
+                } else {
+                    token = Token.TILDE;
+                }
                 break;
             default:
                 throw new ParserException("TODO");
diff --git a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
index 551a53866a..457f45343a 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
@@ -1492,16 +1492,49 @@ public class SQLExprParser extends SQLParser {
             }
         } else if (lexer.token() == Token.IN) {
             expr = inRest(expr);
-        } else if (JdbcConstants.POSTGRESQL.equals(lexer.dbType)
-                && identifierEquals("SIMILAR")) {
-            lexer.nextToken();
-            accept(Token.TO);
+        } else if (JdbcConstants.POSTGRESQL.equals(lexer.dbType)) {
+            if (identifierEquals("SIMILAR")) {
+                lexer.nextToken();
+                accept(Token.TO);
 
-            rightExp = equality();
+                rightExp = equality();
 
-            rightExp = relationalRest(rightExp);
+                rightExp = relationalRest(rightExp);
 
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SIMILAR_TO, rightExp, getDbType());
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SIMILAR_TO, rightExp, getDbType());
+            } else if (lexer.token() == Token.TILDE) {
+                lexer.nextToken();
+
+                rightExp = equality();
+
+                rightExp = relationalRest(rightExp);
+
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.POSIX_Regular_Match, rightExp, getDbType());
+            } else if (lexer.token() == Token.TILDE_STAR) {
+                lexer.nextToken();
+
+                rightExp = equality();
+
+                rightExp = relationalRest(rightExp);
+
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.POSIX_Regular_Match_Insensitive, rightExp, getDbType());
+            } else if (lexer.token() == Token.BANG_TILDE) {
+                lexer.nextToken();
+
+                rightExp = equality();
+
+                rightExp = relationalRest(rightExp);
+
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.POSIX_Regular_Not_Match, rightExp, getDbType());
+            } else if (lexer.token() == Token.BANG_TILDE_STAR) {
+                lexer.nextToken();
+
+                rightExp = equality();
+
+                rightExp = relationalRest(rightExp);
+
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.POSIX_Regular_Not_Match_POSIX_Regular_Match_Insensitive, rightExp, getDbType());
+            }
         }
 
         return expr;
diff --git a/src/main/java/com/alibaba/druid/sql/parser/Token.java b/src/main/java/com/alibaba/druid/sql/parser/Token.java
index cacf0a46c9..174b3598de 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/Token.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/Token.java
@@ -299,7 +299,10 @@ public enum Token {
     LT("<"), 
     BANG("!"),
     BANGBANG("!!"),
-    TILDE("~"), 
+    BANG_TILDE("!~"),
+    BANG_TILDE_STAR("!~*"),
+    TILDE("~"),
+    TILDE_STAR("~*"),
     QUES("?"), 
     COLON(":"), 
     COLONCOLON(":"), 
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest33.java b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest33.java
new file mode 100644
index 0000000000..37b13d246b
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest33.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 1999-2101 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.postgresql;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
+import org.junit.Assert;
+
+import java.util.List;
+
+public class PGSelectTest33 extends PGTest {
+
+    public void test_0() throws Exception {
+        String sql = "select 'thomas' ~ '.*thomas.*'";
+
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        Assert.assertEquals("SELECT 'thomas' ~ '.*thomas.*'", SQLUtils.toPGString(stmt));
+        
+        Assert.assertEquals("select 'thomas' ~ '.*thomas.*'", SQLUtils.toPGString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+
+        Assert.assertEquals(1, statementList.size());
+
+        PGSchemaStatVisitor visitor = new PGSchemaStatVisitor();
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+
+        Assert.assertEquals(0, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getTables().size());
+    }
+}
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest34.java b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest34.java
new file mode 100644
index 0000000000..c67dc6c10c
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest34.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 1999-2101 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.postgresql;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
+import org.junit.Assert;
+
+import java.util.List;
+
+public class PGSelectTest34 extends PGTest {
+
+    public void test_0() throws Exception {
+        String sql = "select 'thomas' ~* '.*thomas.*'";
+
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        Assert.assertEquals("SELECT 'thomas' ~* '.*thomas.*'", SQLUtils.toPGString(stmt));
+        
+        Assert.assertEquals("select 'thomas' ~* '.*thomas.*'", SQLUtils.toPGString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+
+        Assert.assertEquals(1, statementList.size());
+
+        PGSchemaStatVisitor visitor = new PGSchemaStatVisitor();
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+
+        Assert.assertEquals(0, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getTables().size());
+    }
+}
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest35.java b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest35.java
new file mode 100644
index 0000000000..85fbba32d3
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest35.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 1999-2101 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.postgresql;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
+import org.junit.Assert;
+
+import java.util.List;
+
+public class PGSelectTest35 extends PGTest {
+
+    public void test_0() throws Exception {
+        String sql = "select 'thomas' !~ '.*thomas.*'";
+
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        Assert.assertEquals("SELECT 'thomas' !~ '.*thomas.*'", SQLUtils.toPGString(stmt));
+        
+        Assert.assertEquals("select 'thomas' !~ '.*thomas.*'", SQLUtils.toPGString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+
+        Assert.assertEquals(1, statementList.size());
+
+        PGSchemaStatVisitor visitor = new PGSchemaStatVisitor();
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+
+        Assert.assertEquals(0, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getTables().size());
+    }
+}
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest36.java b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest36.java
new file mode 100644
index 0000000000..f3456fd884
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/PGSelectTest36.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 1999-2101 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.postgresql;
+
+import com.alibaba.druid.sql.PGTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
+import org.junit.Assert;
+
+import java.util.List;
+
+public class PGSelectTest36 extends PGTest {
+
+    public void test_0() throws Exception {
+        String sql = "select 'thomas' !~* '.*thomas.*'";
+
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        Assert.assertEquals("SELECT 'thomas' !~* '.*thomas.*'", SQLUtils.toPGString(stmt));
+        
+        Assert.assertEquals("select 'thomas' !~* '.*thomas.*'", SQLUtils.toPGString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+
+        Assert.assertEquals(1, statementList.size());
+
+        PGSchemaStatVisitor visitor = new PGSchemaStatVisitor();
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+
+        Assert.assertEquals(0, visitor.getColumns().size());
+        Assert.assertEquals(0, visitor.getTables().size());
+    }
+}