Aiming at the signal form and the gererating method of the deceptive scene jamming for spaceborne SAR system. This paper proposes the method of jamming based on bistatic location. This method first uses bistatic passive detectors to locate the jammed radar, then smoothes the track and produces jamming signal. It provides accurate position info of the jammed radar, eliminates the effect of random location error on imaging. The bound of location error and its effect on jamming result are studied, so the important problem in implementation of the deceptive scene jamming technique is resolved. The simulation result shows that this method can provide effective jamming.