Abstract: To solve the acoustic compatibility problem when multiple shipboard active sonars work at the same time, an active sonar transmitting waveform design method that comprehensively considers the power spectrum and autocorrelation side-lobe level in a specific frequency band is proposed according to the existing waveform design methods, and different active sonar working frequency bands are the prior knowledge of waveform design. By using the stop cyclic algorithm-new (SCAN) algorithm based on fast Fourier transform (FFT), the power spectrum and autocorrelation sidelobe of the transmitting waveform are comprehensively considered, and the penalty function is introduced to design an active transmitting waveform which takes into account both the power spectrum notch and the associated sidelobes in a specific frequency band. Computer simulation results show that the transmitting waveform designed by the SCAN algorithm can realize the spectrum suppression of the active sonar transmitting waveform in any working frequency band or the sidelobe suppression of the transmitting waveform by controlling the weight factor of the penalty function according to the actual work requirements, so that the mutual interference caused by simultaneous working of multiple active sonars on the shipboard platform can be effectively reduced.