diff --git a/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/project/service/impl/ProjectRelatedPersonnelServiceImpl.java b/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/project/service/impl/ProjectRelatedPersonnelServiceImpl.java
index 9c60e01fc..66e03ed80 100644
--- a/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/project/service/impl/ProjectRelatedPersonnelServiceImpl.java
+++ b/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/project/service/impl/ProjectRelatedPersonnelServiceImpl.java
@@ -265,7 +265,7 @@ public class ProjectRelatedPersonnelServiceImpl extends ServiceImpl<ProjectRelat
 						}
 						lawName.append(lawEngineerName).append(",");
 					}
-					projectRelatedPersonnel.setLawEngineerName(lawName.substring(0,lawName.toString().length()-3));
+					projectRelatedPersonnel.setLawEngineerName(lawName.substring(0,lawName.toString().length()-1));
 				}
 			}
 
@@ -291,7 +291,7 @@ public class ProjectRelatedPersonnelServiceImpl extends ServiceImpl<ProjectRelat
 						}
 						engineeringName.append(engineeringInterfacePersonName).append(",");
 					}
-					projectRelatedPersonnel.setEngineeringInterfacePersonName(engineeringName.substring(0,engineeringName.toString().length()-3));
+					projectRelatedPersonnel.setEngineeringInterfacePersonName(engineeringName.substring(0,engineeringName.toString().length()-1));
 				}
 			}
 
@@ -316,7 +316,7 @@ public class ProjectRelatedPersonnelServiceImpl extends ServiceImpl<ProjectRelat
 						}
 						certificationName.append(certificationEngineerName).append(",");
 					}
-					projectRelatedPersonnel.setCertificationEngineerName(certificationName.substring(0,certificationName.toString().length()-3));
+					projectRelatedPersonnel.setCertificationEngineerName(certificationName.substring(0,certificationName.toString().length()-1));
 				}
 			}