Dongcheng uranium deposit is located in Shuikoushan Jiuyishan uranium metallogenic belt. The uranium deposit is obviously controlled by paleokarst, syncline structure and fault structure. The mineral source is mainly Permian uranium bearing strata. Fold structure, fault structure and paleokarst structure provide good channels and ore bearing space for uranium bearing groundwater migration and enrichment sedimentation. Based on the comprehensive study of the geological characteristics, ore body characteristics and metallogenic geological conditions of the mining area, it is considered that the deposit belongs to carbonaceous siliceous mudstone leaching uranium deposit, and the ore marks are pointed out. <摘要译文>