The possibility of having sex during radiotherapy depends on the specific situation. If the patient receives radiotherapy to non-cervical and other organs, the patient is in good general condition, and the white blood cell level is at normal level, then sex is allowed. If the patient receives radiotherapy to the cervix, vagina and vulva, sex is not recommended because radiotherapy to the cervix, vagina and vulva will cause mild or moderate damage to the local mucous membrane, and if sex is performed, it may cause local infection, so sex is not recommended during radiotherapy to the cervix and other areas. In case of radiotherapy to other sites, it is also not recommended to have sex if the patient has low white blood cell level, because sex may also cause infection to the patient when the white blood cell level is low. If the patient has significant bone destruction, sexual intercourse is also not recommended when receiving radiotherapy to the bone destruction site because it may cause local pathological fractures.