Radiotherapy requires a family member to accompany the patient, but the family member cannot accompany the patient when radiotherapy rays are done. Radiotherapy refers to the use of radiation therapy, generally used to treat tumors. Radiation irradiation of lesions within a controlled range to inhibit tumor growth and reduce the patient’s pain, generally does not cause too much harm to the patient’s body in the treatment, but there is a certain radiation effect, so it is not recommended that family members accompany the patient when he or she is undergoing radiation therapy. However, after the end of radiation therapy, patients may have adverse reactions such as loss of appetite, dizziness, nausea, vomiting, skin lesions, rashes and ulcers in the irradiated area, which require family members to take care of the patient’s body and help him/her in daily life, and at the same time, they should also provide psychological guidance and encouragement to the patient to help him/her to get well soon.