Baking oven sintering technology is the traditional method to prepare polytetrafluoroethylene (PTFE), fluoroethylenepropylene (FEP) and polyfluoroalkoxy (PFA) coating. In order to solve the drawbacks of the traditional technique, a new preparation method by laser sintering is presented in this paper in which the PTFE、 FEP and PFA coating are prepared by 1070 nm continuous fiber laser irradiation replacing traditional hightemperature baking oven curing process. Meanwhile, by controlling laser scanning path, the preparation of the graphical PTFE、FEP、PFA coatings is achieved. The optimized processing parameters are obtained. Analysis indicates that the preparation mechanism is based on the thermal effects of laser energy input, which induces the original powder sprayed layer turn into molten state then promotes the crosslinking curing for the formation of the coating. The whole process acts as physical change without any changes of chemical composition of the material.