The area of rocky desertification is about 704.98 km2 in the Qianjiang karst region of Chongqing City, occupying 29.39% of the total land area.Rocky desertification is seriously threatening living, production, and livelihood of local people and it becomes a serious problem in Chongqing City and South China.This paper dwells on the current situation of rocky desertification in Qianjiang karst region and its hazards and explores the causes of rocky desertif ication.Results indicate that the geological environmental factors, such as vegetation and soil, are basic to rocky desertification formation.Human irrational act ivities are the primary factor of rocky desertification formation and development.Some constructive prevention strategies and advices are proposed.