Abstract: Abstract : Through the thermal analysis and molding experiment of melt-deposited molding parts by using ANSYS simulation software, the influence of FDM molding machine forming platform temperature on the interlayer heat preservation and precision of molding parts is studied. Based on the analysis of the existing forming platform types and the problems, a forming platform is designed to make the forming part have better insulation effect and higher efficiency. According to the simulation software temperature field simulation of the two molding platforms, the simulation experiments of the two thermal insulation forming platforms are carried out, and the molding parts are measured by the coordinate measuring instrument, and the measurement results are analyzed. The results show that the optimized molding quality is better than that of the optimized molding parts.