Abstract: The relations between geology disaster and mountain area's construct is based on in this article .landslide as a serious geology disaster often happens in zhejiang province coastal and mountainous region,which causes the traffic being blocked, the hillmen's farmland being desreoyed, the building being collapsed and the living environment being worsen frequently. In order to prevent geology disaster and obtain early warning and announce in advance, the analysis of lanslides mechanicsm is very important.According to above,the government and scientist can make suitable society and project precautionary measures which will bring benefit to the humanbeings.