2. Patients can also use massage or moxibustion for self-care at home. The position of Qihai point is on the midline of the lower abdomen, below the umbilicus 1.5 inch. It is divided into five equal parts from navel to pubic symphysis, and the position of Qihai point is 1.5 inch. Qihai point is on the white line of abdomen, and the deep part is small intestine; There are superficial epigastric artery and vein branches and inferior epigastric artery and vein branches; The medial branch of the anterior cutaneous branch of the eleventh intercostal nerve is distributed. When finding the position of Qihai point, patients can massage themselves at home or use moxibustion to achieve health care.