Abstract: The Zhaozixiushan Mountain of Huaying deformed and cracked rockmass is located in the famous middle section of HuaYing mountain range in Sichuan province. Its geology condition is very complicated. If the deformed and cracked rockmass destablizated,it will form debris-flow and the matter directly enters the Liangjia river located closely below 700m's differential height, and will forms a disaster " chain " in the Liangjia River, and endanger the safety of more than 2000 life and the part of the city resident. The article is based on the geology condition, the basic characteristic,the causes and the leading inducing factor of the deformed and cracked rockmass illustrates the disaster "chain" characteristic of the deformed and cracked rockmass occured, and has carried on evaluation and partition to harmfulness area. Finally put forward the prevention and cure countermeasure and suggests .