Abstract:This article analyzed and calculated the disease of the TuanJie reservoir before and after “5·12”Wenchuan earthquake for an optimized plan of getting rid of danger. For the chink as the major disease in dam surface,this article estimated the chink inside the dam by collapse degree then tested in the urgent excavation. Running conditions and calculation consequences indicate: the main causes of the disease reservoir are improper design, poor quality construction and mismanagement of the reservoir hub. The dam which had been identified as dangerous severe dam before earthquake, and high risk reservoir after earthquake, needs reinforcement training. Then, basing on the causes of disease, the proper remediation measures and designs were researched giving a reference for similar project.