In recent years, tumor patients are increasing year by year, but most of them are afraid to have sex even long after the treatment is over, and they are ashamed to talk about this aspect. In fact, we should have a correct understanding of this issue. Proper sex life is not only beneficial to the body, but also can promote the relationship between husband and wife and help family harmony. So, what period can you have sex? During the treatment period, the patient’s body is weak, so it is not suitable to have sex. When the tumor treatment is over, 3 to 6 months later, the condition is gradually stabilized, physical strength is gradually recovered, and the patient has adapted to the disease and treatment-related changes, the patient can resume sexual life at this time. Moderate, harmonious and regular sex life is not only harmless to the body, but also can enhance the patient’s self-confidence, adjust the patient’s endocrine system and improve the patient’s physical condition, which is beneficial to the patient’s recovery. And, by restoring the normal physiological function, it will further enhance the feelings between husband and wife, and experience the unfailing love between husband and wife after illness, which greatly improves the quality of life and promotes the harmony and happiness of the family.