diff --git a/server/gameserver/skill.cc b/server/gameserver/skill.cc
index 0e45fb99..f2a2b9ae 100644
--- a/server/gameserver/skill.cc
+++ b/server/gameserver/skill.cc
@@ -302,7 +302,6 @@ void Skill::InitPassiveSkill()
         break;
     case MAGIC_31001_NIU:
         {
-            Proc31001NIU();
         }
         break;
     default:
@@ -981,11 +980,6 @@ void Skill::Proc30901XIONG()
          );
 }
 
-void Skill::Proc31001NIU()
-{
-    owner->GetAbility()->AddDmgRuduce(meta->_number_meta->damage_change());
-}
-
 void Skill::ProcSkillPhase(const mt::SkillPhase* phase)
 {
     switch (phase->func_id) {
diff --git a/server/gameserver/skill.h b/server/gameserver/skill.h
index d02a82d5..6262a1b5 100644
--- a/server/gameserver/skill.h
+++ b/server/gameserver/skill.h
@@ -60,7 +60,6 @@ private:
     void Proc30701BAO();
     void Proc30801LONG();
     void Proc30901XIONG();
-    void Proc31001NIU();
 
     void ProcShotPhase(const mt::SkillPhase* phase);
     void ProcSpecDirShotPhase(const mt::SkillPhase* phase);