Abstract: Aiming at the utilization of the Beidou GEO（Geosynchronous Orbit）Navigation Satellite Signal, thesis conducts the argumentation of performance on non-cooperative detection of sea surface target. First, thesis both comes up with the preliminary system structure precept and establishes direct signal and reflection signal model. Besides, the thesis analyzes the Beidou GEO Navigation Satellite Signal performance from two aspects: maximum detection range and ambiguity function of pseudorandom sequence. In addition, the simulation experimental results show that indexes of receiver input power and SNR on Beidou GEO Satellite reflection signal are better than that on GPS MEO（Medium Earth Orbit）Satellite reflection signal. Furthermore, On Delay dimension and Doppler frequency dimension, Kasami code and Gold code of Beidou have the good resolution. In conclusion, the conduction of Non-cooperative Detection of Sea Surface by utilizing Beidou GEO satellite signal is feasible.