Abstract: Shallow seismic profiling is one of the indispensable tools in offshore survey to reveal the geological structure and distribution pattern of waters and shallow strata. However, there are various factors which render influences onto offshore data acquisition and resulting in data noises. Even though the frequency is high and the ratio of noise/signal is low, we may still loss valid information in the original profiles. In this paper, we take the Liaohe River Delta as an example and put forward some key techniques for shallow seismic data processing to reduce the noises presented on the profiles so as to improve the noise/signal ratio and enhance the resolution of the original data for better interpretation of sub-bottom geological structures.