diff --git a/postgresqlwriter/src/main/java/com/alibaba/datax/plugin/writer/postgresqlwriter/PostgresqlWriter.java b/postgresqlwriter/src/main/java/com/alibaba/datax/plugin/writer/postgresqlwriter/PostgresqlWriter.java
index 22dc0c1e..62eb4146 100755
--- a/postgresqlwriter/src/main/java/com/alibaba/datax/plugin/writer/postgresqlwriter/PostgresqlWriter.java
+++ b/postgresqlwriter/src/main/java/com/alibaba/datax/plugin/writer/postgresqlwriter/PostgresqlWriter.java
@@ -69,6 +69,8 @@ public class PostgresqlWriter extends Writer {
 						return "?::int";
 					}else if("bit".equalsIgnoreCase(columnType)){
 						return "?::bit varying";
+					}else if("bigserial".equalsIgnoreCase(columnType)){
+						return "?::int8";
 					}
 					return "?::" + columnType;
 				}