Abstract: It is difficult to acquire complete data in field and enhance the signal-to-noise (S/N) ratio of data in zones where urban area is large, nearsurface conditions are complicated, main target layers are shallowly buried, S/N ratio of seismic data is low, obstacles are widely distributed, and the population are highly concentrated. Good results have been achieved in exploration, based on the design of special geometry, the selection of routes and points aided by high-precision aerophotos, the combined excitation of explosive source and vibroseis, and the embedment of geophones by using electric drill first. This fills the blank that there are no seismic data acquired in complicated city zones and meets the requirements of oilfield companies for conducting integrated research and increasing reserves and production. Practice shows that the approach is scientific and rational, and easy to operation, providing a good reference for seismic exploration in city zones with extra-shallow target layers

Key words: digital geophone, full-digital seismic, full-digital processing, wide band