If you take chemotherapy, you may be suffering from a malignant tumor. Chemotherapy is an important method of treating malignant tumors, which has certain damage to the body, such as may cause hair loss, lowering of white blood cells and platelets. After chemotherapy, due to the weakness of the body, resistance to decline, white blood cells lower, easy to infection, chemotherapy just after the end of try not to cohabit, so as not to cause infection. If the blood routine is normal in a week or so after radiotherapy and the body gradually recovers, it is possible to have coitus in this case, but if it is endometrial cancer or cervical cancer, etc., it is not possible to have coitus in a short period of time, otherwise the recovery of the body may be affected. In case of breast cancer or esophageal cancer, if there is no serious discomfort after one week of chemotherapy and the blood test is normal, coitus is allowed, but it should not be too frequent.