Laser radar can be used not only to analyze the target spectral characteristics, but also to obtain the spatial orientation, distance, three-dimensional profile and movement characteristics of the target. The conventional lidars can only measure single characteristic of the target, thus it is difficult to obtain the above measurement features of the target at the same time. To meet the multi-functional requirements, such kind of lidar with the above measurement capabilities is designed. The structure of the optical system is greatly simplified by adopting transmitting/receiving common optical system. The optical system, with a special refraction /reflective structure, can achieve 400-1400 nm wide band transmission and reception by using two kinds of optical materials. To achieve multi-spectral detection, the laser light source uses an optical parametric oscillator single pulse tunable laser, of which spectral adjustment range covers the entire detection band. The equivalent beam expansion ratio of the laser emission system reaches 12.6, and the equivalent F number of monochrome echo receiving system is 8. The radial energy within 20 μm is close to 100% with the photomultiplier tube. In order to track and finely measure the structure of the target, a visible light receiving system is adopted to the common light path. Thus, the multi-spectral laser radar has visible light imaging capabilities. The full field of view of the visible light receiving system is 1.6°, and the designed modulation transfer function is better than 0.5 at 37 lp·mm-1. The design parameters of the system meet the detection requirements.