Abstract: Aiming at the problem that the maritime measurement experiment of the ship physics field is costly and difficult to or-ganize,a hardware-in-the-loop simulation experiment platform of ship's physical fields is designed. Through the mathematical model of the ship physics field,the physics field of various types of target ships passing under different heading and azimuth angles is simulated,and the physics field is sensed by acoustic,magnetic and water pressure sensors. Practice shows that with the experimental platform, the sound field, magnetic field and water pressure field signal waveforms of the ship passing through can be observed under lab-oratory conditions, and the time domain and frequency domain characteristics of the signal can be analyzed by measuring the stored data.