diff --git a/server/gameserver/ability.cc b/server/gameserver/ability.cc
index 2616ee44..91300c85 100644
--- a/server/gameserver/ability.cc
+++ b/server/gameserver/ability.cc
@@ -103,3 +103,72 @@ void Ability::FillMFAttrAdditionList(Room* room, Human* hum,
         }
     }
 }
+
+void Ability::AddSpeedAddition(float rate)
+{
+    speed_addition_rate_ += rate;
+    ++speed_addition_times_;
+}
+
+void Ability::DelSpeedAddition(float rate)
+{
+    speed_addition_rate_ -= rate;
+    speed_addition_rate_ = std::max(0.0f, speed_addition_rate_);
+    --speed_addition_times_;
+#ifdef DEBUG
+    if (speed_addition_times_ < 0) {
+        abort();
+    }
+#endif
+}
+
+float Ability::GetSpeedAddition()
+{
+    return speed_addition_rate_;
+}
+
+void Ability::AddDmgRuduce(float rate)
+{
+    dmg_ruduce_rate_ += rate;
+    ++dmg_ruduce_times_;
+}
+
+void Ability::DelDmgRuduce(float rate)
+{
+    dmg_ruduce_rate_ -= rate;
+    dmg_ruduce_rate_ = std::max(0.0f, dmg_ruduce_rate_);
+    --dmg_ruduce_times_;
+#ifdef DEBUG
+    if (dmg_ruduce_times_ < 0) {
+        abort();
+    }
+#endif
+}
+
+float Ability::GetDmgRuduce()
+{
+    return dmg_ruduce_rate_;
+}
+
+void Ability::AddDmgAddition(float rate)
+{
+    dmg_addition_rate_ += rate;
+    ++dmg_addition_times_;
+}
+
+void Ability::DelDmgAddition(float rate)
+{
+    dmg_addition_rate_ -= rate;
+    dmg_addition_rate_ = std::max(0.0f, dmg_addition_rate_);
+    --dmg_addition_times_;
+#ifdef DEBUG
+    if (dmg_addition_times_ < 0) {
+        abort();
+    }
+#endif
+}
+
+float Ability::GetDmgAddition()
+{
+    return dmg_addition_rate_;
+}
diff --git a/server/gameserver/ability.h b/server/gameserver/ability.h
index b1e56fb2..127839f4 100644
--- a/server/gameserver/ability.h
+++ b/server/gameserver/ability.h
@@ -19,9 +19,27 @@ class Ability
     float* GetBuffAttrRatePtr(int attr_id);
     void FillMFAttrAdditionList(Room* room, Human* hum,
                                 ::google::protobuf::RepeatedPtrField<::cs::MFAttrAddition>* pb_attr_list);
+    void AddSpeedAddition(float rate);
+    void DelSpeedAddition(float rate);
+    float GetSpeedAddition();
+    void AddDmgRuduce(float rate);
+    void DelDmgRuduce(float rate);
+    float GetDmgRuduce();
+    void AddDmgAddition(float rate);
+    void DelDmgAddition(float rate);
+    float GetDmgAddition();
 
  private:
     std::array<float, kHAT_End> buff_attr_abs_ = {};
     std::array<float, kHAT_End> buff_attr_rate_ = {};
     std::array<int, kHAT_End> buff_attr_flag_ = {};
+
+    int speed_addition_times_ = 0;
+    float speed_addition_rate_ = 0;
+
+    int dmg_ruduce_times_ = 0;
+    float dmg_ruduce_rate_ = 0;
+
+    int dmg_addition_times_ = 0;
+    float dmg_addition_rate_ = 0;
 };