The simulation of spatial-temporal correlated K-distribution sea clutter will benefit the research on detection performance of ship boarded radar in the clutter environment.The features of temporal and spatial correlation are analyzed first in this paper.A simulation method based on SIRP for spatial-temporal correlated K-distribution sea clutter was then proposed.Theoretic analysis and simulation are proceeded for the feature of temporal correlation and spatial correlation and amplitude distribution.Results demonstrate that the clutter generated by this method is K-distribution and its spatial-temporal correlation can be set on demand.