Splitting is an important operation in leather industry. If mishandled,it will affect the processing quality of the leather seriously. Therefore,starting from the working principle, the importance of the key parts of the splitting machine was shown; then, how to properly adjust the hydraulic splitting machine was shown by the adjusting method of the key parts of the splitting machine. And in the future leather processing, the adjustment problem of the machine should be pay attention to use modern leather processing machine correctly.