Once a patient is diagnosed with cancer, doctors and their families often choose to conceal the condition. They do not tell the patient about the cancer condition. The purpose is to fear the patient’s psychological fear, and even fear that the patient will make some agitated, suicidal and other excessive behaviors. This is possible in the early stage of cancer detection, because patients with cancer are often psychologically afraid of malignant tumors in the early stage. However, as the treatment progresses, patients will gradually suspect that they are suffering from malignant tumor. When the patient has high suspicion of malignant tumor and cannot be confirmed, he will suffer from anxiety, depression, irritability, loss of appetite, insomnia and so on. He may even have plant nervous disorder, so that he may not cooperate with the treatment and delay the disease. At this time, we might as well try to suggest the patient to accept the fact of having malignant tumor, and tell the patient step by step that the patient is suffering from early stage cancer, which is still treatable and has hope to be cured. Malignant tumors should be treated correctly, not all malignant tumors are equal to incurable diseases. With the development of medical science, many cancers can be treated or even cured. Especially for early stage cancer patients, if they undergo regular comprehensive treatment, they can achieve satisfactory results or survive for a long time. Give more examples, such as those known to patients. And help the patient to build up confidence to overcome the disease. This will make the patient more cooperative with the treatment. Because the patient knows that he/she is suffering from cancer, he/she is also a kind of spiritual relief. Survival is a human instinct, and as long as the measures are well chosen, the patient will not make irrational actions easily and will often cooperate with the treatment actively.