With the rapid advancement of my country’s urbanization process, large, medium and small cities are showing a situation of comprehensive development of underground space. However, the development and utilization of underground space in many cities has problems such as unclear underground conditions and unclear underground space resources, which have greatly affected the underground space. The development and utilization of the city and the strategic layout planning of the city. Huizhou Tonghu New District is a typical eastern mid- sized urban new district. In order to avoid problems such as unclear ground water and soil quality, unclear underground space resources, and no scientific data support for the development of urban underground space resources after the completion of the old city, We specially carry out green economy ambient noise imaging research in the study area to find out the Quaternary situation and fault development in the Tonghu New Area of Huizhou, and provide data support for the successful completion of the new area. This study is based on a dense seismic array with a interval of about 10m and a length of about 1km. Using the ambient noise data of a total of 200 stations in two survey lines, two methods of noise auto- correlation and noise HVSR were used to measure two linear surveys in the study area. The lines are calculated separately, and through data preprocessing, single data processing, and multiple data integration, the auto- correlation profile and HVSR profile of the two survey lines are finally obtained. This study shows that the time domain of the Quaternary top of the study area is 20~100ms, the depth domain is 5~20m, and the shallow P- wave velocity range is 400~500m/s, which is similar to the collected boreholes. The information is consistent. This study also shows that the combined method of noise auto- correlation and noise HVSR with dense arrays is an efficient, green, and low- cost method that can be used to investigate the Quaternary interface (strong impedance interface) and shallow sediments active faults in.