Aiming at the problems of intensive calculation and difficulty in testing with common methods of moving sound source locating, a locating method based on array signal processing was proposed. Locating ability of single and double five-element cross array were analyzed. Based on the high performance of direction estimating with single array, location of moving sound source was achieved by the double arrays crossing method according to the thought of frame processing in beamforming. Locating experiment was carried out when using engine noise of self-propelled vehicle as simulated source. Then the length selection of short correlation and compensation of moving path were studied. Experiment shows that the method is effective for moving sound source locating with high precision, maximum relative error stays below level of 5%.