The characteristics of laser induced sound are analyzed.An experimental system is developed for producing the laser induced sound.The power spectrum and the ambiguity function are analyzed.The range resolution and the Doppler resolution constant of the laser induced sound are determined.It is basically proved in theory that the range resolution is 3.3mm and the Doppler resolution constant is large.The laser induced sound can be a kind of sound sources as high resolution image sonars which are not sensitive to Doppler frequency.