The paper analyses the overall performance parameters, operation principle, and general structure of a double wavelength (1064nm and 532nm) laser device for Laser skin resurfacing and treatment. The instrument uses solid state Laser with the energy ofper pulse 400mJ or 200Mj, the width ofpulse of 8-iOns and the density of light spot of 12. 8J/cm2 or 6.4J/cm2. Discussion is made carefully for the design of solid laser power supply, and fundamental intelligent controlling systems. Reliability and security design is also analyzed particularly.