Based on introducing Laser-induced Chemical Liquid Deposition (LCLD) technology, this paper gave a new type of RP system graph based on the technology, and it has introduced the work process of this system on detail. The process of LCLD is controlled by thermal transfer if the heights of liquid and metallic material are changeless. Modeling thermodynamics of the part of facular laser beam of the process of LCLD, calculating and emulating by engineering analytical software, these researches can lead to the conclusion that the highest temperature of plating liquid can be found if the diameter of the facular laser beam is unchangeable. The relation between temperature and power of laser is linear on the whole. The locomotory speed of the laser beam does little influence on temperature of plating liquid; the thermal area of plating liquid influenced by laser is very small; the temperature in the thermal area is asymmetrical. The width of metal line of the deposition can be controlled at a certain extent by controlling the initial temperature of plating liquid and power of laser.