Firstly，the phase-coded pulse compression signal is analyzed. Then the radar clutter model for phase-coded pulse compression radar is proposed based on the radar clutter model for the general pulse radar. Both the probability density characteristics and the spectral density characteristicsof the clutter signal are analyzed by Monte-Carlo method. The correlation characteristics of the clutter signal between the two range gates are also discussed. Finally，for the design of the radar environment simulator, the implementation of the clutter simulation's system is proposed by mixed means of software and hardware.