Using the simulated laser source for optoelectronic instrument testing and calibrating is one of the important methods of optoelectronic equipment fault diagnosis and protection. Under the same platform,for testing laser equipments with different wavelengths,a single wavelength laser source is difficult to meet the requirements of them.In this paper,by using independently developed muliti-wavelengh simulated laser source and the optoelectronic testing platform with the function of optoelectronic testing and controlment,information collection,analysis and processing,a testing method of laser equipments with several different wavelengths is proposed. Experiment shows,the method is appropriate to detect the laser sources with multi-wavelength and different pulse widths,such as 1.06 μm,0.9 μm and 1.55 μm,etc. Due to high integration and small bulk,the operation of testing is convenient in field condition.