Gastric cancer is one of the most common malignant tumors, ranking first among digestive tract tumors, and surgery is the first choice of treatment for gastric cancer. Chemotherapy is mainly used for preoperative, intraoperative and postoperative gastric cancer patients and those with advanced gastric cancer or other reasons that cannot be operated. The cost of chemotherapy depends on the chemotherapy regimen and the price of the drugs used in chemotherapy, generally the cost of one first-line chemotherapy is between RMB 2,000 and 12,000. In the case of post-operative chemotherapy for gastric cancer, it usually takes 6 to 8 cycles. The specific chemotherapy regimen should be decided according to the patient’s condition, such as the malignancy degree, stage, tumor cell differentiation level and the patient’s physical condition. Because chemotherapy is a double-edged sword, it kills cancer cells and normal cells at the same time, so there will be many side effects during chemotherapy, such as anorexia, nausea, vomiting, diarrhea, abdominal pain, hair loss, bone marrow suppression, and white blood cell drop. The cost of the whole process is not certain, generally a chemotherapy cost between 2000 and 12,000 yuan, in addition to the chemotherapy regimen, the severity of side effects, the patient’s own situation, but also depending on the level of the hospital, the region, the use of domestic drugs or imported drugs related. In a word, chemotherapy must be received in a regular hospital, and the general cost of chemotherapy ranges from 2000 to 12000 RMB, which is related to the level of the hospital, the geographical area, the patient’s physical condition, the stage of cancer, and whether the drugs used are domestic or imported.