Gastric cancer pt4an1m0 belongs to stage IIIA. Gastric cancer pt4an1m0, where t4 means that the cancer cells have grown to the plasma membrane layer and may grow to nearby organs (spleen, intestines, pancreas, kidneys, etc.) or other structures such as large blood vessels. n stands for the metastatic situation of lymph nodes, and n1 means that the cancer has spread to 1 or 2 nearby lymph nodes. m0 means that there is no distant metastasis. Gastric cancer pt4an1m0 belongs to stage IIIA, i.e. it is an intermediate to advanced stage. Therefore, patients with gastric cancer in this stage usually prefer surgical treatment, through which the tumor load can be reduced. For patients who are assessed to be intolerant to surgery or do not accept surgical treatment in the course of treatment, chemotherapy and targeted therapy can be considered in combination with the development of the disease. It is recommended to cooperate with doctors to avoid aggravation of the disease.