After surgery, patients with gastric cancer should take targeted therapy according to the pathological condition and immunohistochemistry results. These drugs are mainly for patients with HER2 positive immunohistochemistry of gastric cancer and have better therapeutic effect. 2. Anti-angiogenic agents can be chosen, and the commonly used drugs in clinical practice include Apatinib, which has better therapeutic effect for patients with advanced gastric cancer with multiple metastases or malignant ascites. In order to select targeted drugs for gastric cancer patients, they must combine the pathological condition and immunohistochemistry results of patients, go to regular medical oncology department for corresponding consultation, and select targeted drugs appropriately according to the doctor’s guidance.