In order to ensure the precision tolerance of die-casting parts, the die-casting mold base must have high accuracy and stability. During the manufacturing process, it is necessary to strictly control the machining accuracy and assembly accuracy of the mold base. The machining accuracy includes requirements for dimensional accuracy, parallelism, and verticality of the mold base. Assembly accuracy refers to the fitting accuracy between the mold base, mold, and die-casting machine. Only by ensuring the accuracy of the mold seat can the precision tolerance of the die-casting parts be ensured during the die-casting process. In order to further ensure the precision tolerance of die-casting parts, it is also necessary to optimize and control the die-casting process. By optimizing die casting process parameters such as pressure, temperature, injection speed, etc., problems such as shrinkage and warping of die castings can be reduced, and their precision tolerances can be improved. At the same time, by strictly controlling the process parameters during the die casting process, such as mold temperature, cooling time, etc., the deformation of the die casting can be reduced and its precision tolerance can be improved. the die casting mold seat, quality inspection, and precision tolerance assurance are very important links in the die casting process. Only through reasonable selection and use of mold seats, strict quality testing, and optimization of die-casting processes can the quality and precision tolerances of die-casting parts be guaranteed to meet customer needs.