Objective : The purpose of these cases is to observe the effect of burning acupuncture therapy on the traumatic injury of medical collateral ligament. Methods : The patients were treated by burning acupuncture therapy to recover injury of medical collateral ligament. The progress evaluation of knee joint pain was measured by the knee society knee score(KSKS), function score (KSFS) and visual analog scale(VAS). Results : KSKS & KSFS were increased and VAS decreased in all cases. Conclusions : We had concluded that the burning acupuncture therapy can be effective to knee joint pain caused by traumatic injury of medial collateral ligament.