Abstract: During the work of buildings or roads in fractured rock or adequate groundwater region,water seepage is the main factor affecting the construction, especially in the rainy season. The lack of underground drainage facilities will directly affect the construction and road usage performance, reduce its service life and seriously affect operational safety. Taking an underground metro park in Wuxi as a research object, this paper systematic studies the drainage solutions of the seepage area from the survey,design, construction and other aspects. It proposes different technical measures of structure foundation and embankment,emphasizes key points of construction quality control,which has application value in underground drainage system design for big construction in fractured rock region.