This paper describes a new technique for generating bistatic sea clutter returns based on the compound K-distribution model for clutter amplitude statistics. The technique adopts the computational electromagnetic (CEM) method to calculate bistatic sea clutter reflectivity by the given bistatic geometrical relationship, aiming at obtaining the parameters of the distribution. Then the theory of spherically invariant random processes (SIRP) is used to generate the returns of the bistatic sea clutter following compound K-distribution. This study can be used to evaluate the bistatic radar signal model and predict system detection performance in the sea clutter environment. Simulation results verify the proposed technique.