There are several steps on how to do hemodialysis: the patient is required to have met the criteria for dialysis and also have the appropriate dialysis access, which comes in two main forms. One is a semi-permanent venous placement and the other is an autologous arteriovenous endovascular fistula. The arteriovenous endovascular fistula can be divided into end-to-end anastomosis and end-to-lateral anastomosis, and the site is mainly in the upper limbs bilaterally, and the semi-permanent indwelling tube is mainly the internal jugular vein placement. Firstly, the dialyzer connected to the line is pre-flushed with heparin saline and all filled with heparin saline, then the puncture needle punctures the vessel behind the arteriovenous endovascular fistula and starts the blood pump to draw blood into the dialysis machine followed by the dialyzer. In the dialyzer through the diffusion of the way to do toxin exchange, after the circuit and then re-pass the endovascular fistula back to the blood vessels, so repeatedly cycle treatment time for 4 hours at a time, can achieve the purpose of removing water and toxins, the patient needs to do hemodialysis 3 times a week.