Cadmium Selenium (CdSe)is an important IIVI semiconductor material with excellent properties. The CdSe single crystal was grown by the vapor phase growing technique, and the growth rate was studied from the crystal growth kinetics, then the crystal structure and optical properties of the crystal material were characterized. The Raman spectrum show that the CdSe crystal is a polar material with wurtzite structure. XRD spectrum show that the crystal growth surface is (001) surface, and the FWHM value of diffraction peak is small. The optical test shows that the CdSe has good optical transmission properites in the nearinfrared band.