Due to the lack of medical knowledge and lack of understanding of the condition, patients are particularly concerned about their condition, both wanting to know their true condition and fearing that their condition is serious and beyond their psychological capacity, and are internally conflicted. So should we tell patients about their condition or not? Some foreign studies show that about 77% of cancer patients know the truth of their condition, while the informed rate of domestic patients is lower than that of foreign patients, which may be related to cultural differences. Generally, doctors in China will inform their family members of their condition first, and then decide with them whether to inform the patients or not, while most family members will conceal the patient’s condition or tell part of the patient’s condition in order to prevent the patient from despair, such as telling the patient to have gastrectomy For example, they may tell the patient that they are having gastrectomy because there is a large ulcer in the stomach and it will become gastric cancer in the future if not removed, or the gastric cancer has metastasized and is inoperable, but what they tell the patient is the early stage of gastric cancer, which can be treated with chemotherapy and Chinese medicine only and does not need surgery. However, domestic research shows that the subjective will of most patients with malignant tumors themselves is to learn as much as possible about their condition, good or bad. As for the emotional reaction of patients after informing them the truth and the influence on treatment, the results of different studies vary greatly. Some studies found that the condition of the condition or not has a certain influence on the physical and mental symptoms of patients, and some studies showed that informed or not is not an influencing factor of anxiety and depression of gastric cancer patients. Then should we tell patients about their disease? And how should patients be told about their condition? This not only requires specific analysis according to patients’ personality, knowledge level, social status, personal will and psychological ability, but also requires mastering the correct way, skills and timing of informing. After patients understand the truth, if handled properly, they can improve their confidence in overcoming the disease and cooperate with the doctors’ treatment. Some experts suggest that 1/3 of cancer patients are “scared to death”. For patients with poor psychological ability, it is not suitable to inform them of their true condition, or they can conceal part of their condition appropriately.