Abstract: Wan Zhou He Ping Guang Chang landslide zone,for short HPGC, in reservoir region of the Three Gorge,which is locate in Wan Zhou main town of Chong Qing city,where lie to north bank of Chang Jiang and is intersection of Chang Jiang and its branch called Zhu Xi river. It is one of the Four Massiness Landslide, which were ranked investigation and prevention signified in reservoir region of the Three Gorge. the geological baby of HPGC is a loose accumulation mixed, which comprised human activity accumulation, collapse-slide accumulation, weathering residual deposits and alluvium. Substance comprises characteristic of HPGC testified it true that accumulation of HPGC had not been characteristic slid with identical and large scale, but it had being accumulated step by step with the earth's crust uplifted slowly of the Three Gorge region and while bed of Chang Jiang river cut down, which is significant conclusion. That is very important guidance significance for engineering of HPGC slide and bank collapse preventing.