The invention discloses a frequency-resolved optical gating method based femtosecond laser pulse testing platform. In the platform, after laser to be detected emitted by a laser device is converged by a cylindrical lens in a laser converge assembly, the laser becomes convergent light; after the convergent light is subjected to beam splitting and delayed time processing by a Fresnel biprism in a beam splitting time-delay assembly, the convergent light becomes delayed light; after the delayed light is subjected to frequency multiplication by BBO crystal in a frequency multiplication crystal assembly, the delayed light becomes frequency multiplied light; after the frequency multiplied light is imaged by a bicylinder lens in an imaging assembly, the frequency multiplied light becomes imaged light; the imaged light is acquired by a CCD camera in an image acquisition assembly to become image information; and the image information is received by a computer. The testing platform is to mount a plurality of optical devices on a substrate, can conveniently realize coaxiality of the laser converge assembly, the beam splitting time-delay assembly, the frequency multiplication crystal assembly, the imaging assembly and the CCD camera.