If tumor patients have a large amount of ascites, they can be treated by abdominal puncture and drainage, intravenous injection of albumin, systemic medication against cancer and other methods. 1. Abdominal puncture: If ultrasound suggests a large amount of ascites, abdominal puncture and drainage can be carried out after excluding contraindications to puncture, the initial puncture and drainage should not be more than 1,000 ml, and the discharge of liquid should not be too fast. If dizziness, panic, nausea and vomiting are found during puncture, puncture should be stopped immediately, bed rest should be given, and the extracted ascites should be subjected to the routine examination of ascites and exfoliated cells. If malignant peritoneal fluid is detected, anti-cancer drugs can be injected into the abdominal cavity. 2. Intravenous injection of albumin: Ascites produced by tumor patients is commonly caused by hypoproteinemia, the normal value of serum albumin is 35g/L-51g/L, and some patients with serum albumin lower than 25g/L will produce ascites. Oral and intravenous injection of albumin can maintain colloid osmolality in plasma, and keep the dynamic balance between inside and outside of the cell and interstitial space of the tissues. 3. Systemic drug anti-cancer treatment: if malignant ascites occurs in the late stage of cancer patients, in addition to the above treatment, systemic anti-cancer drugs should be given to further control the ascites. If the patient is diagnosed as having a large amount of ascites with abdominal distension and abdominal pain, he/she should go to the higher level hospital in time for systematic diagnosis and treatment, and find out the cause of the disease and treat the symptoms under the guidance of the doctor.