Abstract: Due to the debug requirement of torpedo fuze to electromagnetic environment uniformity, a judgment method of electromagnetic environment uniformity to torpedo fuze is put forward to improve the debug quality of torpedo fuze. Based on the structure characteristic of torpedo fuze receiving equipment, electromagnetic environment is measured by two symmetrical 9-sensors measuring arrays and the measured data is pre-processed by moving least-squares method (MLS). Then, nonuniformity probability is computed according to magnetic sensitivity of torpedo fuze. The judgment criterion of electromagnetic environment uniformity to torpedo fuze is given by using false alarm rate of torpedo fuze and amplitude frequency response of its receiver. The computation result of measured data validates the correctness and rationality of the proposed method.