Color ultrasound is usually available for the rectum. Rectal color ultrasound is an examination in which an ultrasound probe is inserted through the anus into the rectal area, which provides a better view of the anus, the area around the rectum, and the organs and lesions in the pelvis. The ultrasound can detect the presence of tumors under the rectal mucosa, as well as the presence of fluid or abscesses around the rectum. With rectal ultrasound, men can be examined for lesions in the prostate, seminal vesicle glands and anorectum. A vaginal ultrasound probe is also used which is inserted directly into the rectum so as to visualize organic changes in the intestinal wall. Women may choose transrectal rather than vaginal ultrasound for reasons such as nulliparous virgins, heavy bleeding in the vagina, or in case of an emergency such as a menstrual exam. Rectal patients who need to do ultrasound, first follow the doctor’s instructions to do a good job of cleaning enema, do not eat spicy irritating, cold food on weekdays, to eat more vegetables and fruits, try not to drink alcohol, and at the same time to strengthen the exercise to improve immunity, pay attention to hygiene to avoid infections that lead to the aggravation of the symptoms of proctitis and so on. Patients who want to do ultrasound, it is recommended to go to the hospital for consultation, according to their own situation, under the guidance of professional doctors to choose the appropriate examination method.