After iodine 131 treatment, patients are able to share a bathroom with family members and are advised to flush more often after using the toilet, but should avoid sharing with infants, young children and pregnant women as much as possible. Iodine 131 treatment destroys thyroid tissue, which in turn reduces the production of thyroid hormones and ultimately treats hyperthyroidism. After iodine 131 treatment, radioactive iodine will exist in the patient’s body, and it will be discharged from the patient’s excretion, so after iodine radiation treatment, you need to pay attention to avoid contact with pregnant women and children and other special groups, at this time, you can share the bathroom with your family members, but after going to the toilet, it is recommended that more flushing, to keep clean, in order to avoid affecting the family. If you are not sure about the precautions related to iodine 131 treatment, it is recommended to go to the hospital and consult a professional doctor.