It is possible for cancer patients to have intercourse. If it is between husband and wife, it depends on the specific type of cancer and the treatment situation of the patient. If it is a female patient with malignant tumor of breast, generally you need to consider having intercourse after the end of treatment, that is, after the end of radiotherapy and chemotherapy, and after the recovery of physical condition. In case of cervical malignant tumor, because of total hysterectomy, intercourse may be affected to a certain extent, but the main sexual organs of the patient still exist, so intercourse is possible, provided that the patient rests for 2-3 months after the completion of radiotherapy and chemotherapy before considering intercourse. In case of other malignant tumors, there is usually no major effect, such as colorectal and lung malignant tumors, it is also necessary to pay attention to the physical condition and not to work too hard.