Hysterosalpingography is an operation in the uterine cavity, after the operation, there will be a small amount of vaginal bleeding or brown secretion, which is normal and usually does not need to be treated. Hysterosalpingography refers to injecting contrast agent into the uterine cavity and fallopian tubes through catheter, and then observing the shape of the uterine cavity and fallopian tubes; the status of the umbilical end of the fallopian tubes and the obstruction site; and the dispersion of the contrast agent in the pelvis, etc., so as to determine whether there is any deformity of the uterus, tubal obstruction, the degree of patency, tubal inflammation of the nodal tubes, the pelvic cavity, the presence or absence of adhesion, and the function of the uterine cervix. Uterine tubal imaging in the placement of intrauterine catheter and contrast injection process may cause irritation or damage to the cervical canal and endometrium, a small amount of vaginal bleeding or brown discharge, is a normal phenomenon, usually lasts for 3 to 5 days clean, do not need special treatment. If the vaginal bleeding is like menstrual bleeding or more than 7 days, or persistent abdominal pain, you should go to the hospital for follow-up. After the operation, you should pay attention to rest, prevent infection, prohibit sex for half a month, pay attention to observe the vaginal bleeding and abdominal pain, and go to the hospital if there is any abnormality.