At present, in the field of engineering calculation, the methods of calculation "probability" is the important analytical method. However, these are many uncertainties in the actual work; the results of analytical methods are often more serious deviation from the actual situation. With the development of computers, computing staff find out a new approach to calculation "probability" - simulation method. This method simulates the whole process of practical work through to calculate the probability. However, this method has not been verified whether or not to apply in the calculation of torpedo hit probability. To address this situation, this paper find out an acoustic homing torpedo for hit probability simulation methods, with the Matlab Simulink simulation module, and verified by example to prove that equally can be applied in the calculation of torpedo hit probability.