Abstract: With the swift growth of China's economy and the acceleration of urbanization, the contradiction between limited land resources and urban development is becoming more and more salient. Hence, the safe and rational use of urban underground space and geological environmental protection are of great strategic significance. The G20, Asian Games and digital economy bring great opportunities for the rapid development of Hangzhou, but also cause a thorny bottleneck between rapid population growth and limited land resources. In order to solve this problem, School of Earth Sciences of Zhejiang University has carried out a feasibility study of a variety of geophysical methods, including elastic wave methods, electrical and electromagnetic methods, in view of the need for detailed detection of underground space under this special geomorphological geology in the hilly area of south china. The results show that different exploration methods have obvious differences in exploration depth, resolution and exploration efficiency, so it is necessary to select suitable exploration methods according to underground geological conditions and surface conditions. These conclusions will have exemplary guiding significance and reference value for the development and utilization of urban underground space in the southern hilly area.