Manufacturing method of steel pipe cold-drawing die

The invention discloses a manufacturing method of a steel pipe cold-drawing die. The manufacturing method of the steel pipe cold-drawing die comprises the following steps: collecting process parameters of a reference steel pipe in an actual cold-drawing manufacturing process; a reference mold simulation model is established based on the parameters of the reference mold, a reference steel pipe simulation model is established based on the parameters of the reference steel pipe before cold drawing, grid division is conducted on the reference steel pipe simulation model, and steel pipe cold drawing finite element analysis is conducted to obtain a finite element basic model; and the initial parameters of the target mold and the initial parameters of the target steel pipe are substituted into the finite element basic model, cold drawing finite element analysis is conducted, the initial parameters of the target mold are improved with the product quality parameters as an optimization target to obtain optimized parame