Peritonitis dialysis needs to be decided according to one’s own condition, and the treatment time is usually around 2 weeks. Each person’s own situation and recovery ability will be different, need to observe the severity of the patient’s underlying disease, if the patient suffers from the underlying disease, the treatment may take longer, usually more than 2 weeks; and for their own recovery is good, no underlying disease, dialysis may take about 2 weeks. Peritonitis is a common and serious disease in surgery caused by bacterial infection, chemical irritation or external injury. The main clinical manifestations are abdominal pain, abdominal muscle tension, as well as nausea, vomiting, fever, etc. In severe cases, it can lead to a drop in blood pressure and systemic toxic reaction, and if not treated in time, toxic shock may occur, which is life-threatening. The basic principle of peritonitis dialysis is to use the peritoneum as a dialysis membrane to separate the dialysate instilled into the abdominal cavity from the blood, with the purpose of correcting the imbalance of water, electrolytes, acid-base balance.