The first step is to go to the hospital for examination and treatment. The doctor will usually check the routine blood and abdominal ultrasound first, and also draw out the peritoneal dialysis fluid for bacterial culture. Before the culture results are available, regular anti-inflammatory treatment is given, usually with cephalosporin antibiotics and anti-anaerobic drugs such as metronidazole, ornidazole or tinidazole. In most cases, peritonitis can gradually improve with regular anti-inflammatory treatment. However, during the treatment period, it is also important to pay attention to the diet, such as not eating too spicy foods, such as chili peppers, spicy sticks, spicy hot pot, etc., and not drinking alcoholic beverages. You can consume more vitamin and fiber-rich foods such as fruits and green vegetables, and high quality protein such as fish and shrimp, which can help your body recover. If the treatment improves, peritoneal dialysis can be continued. However, if conservative treatment is ineffective, a dissection or laparoscopic exploration may be performed to remove the infected necrotic tissue and follow up treatment.