The fallopian tube is tubular. The two tubes are one at right and other at left. Each one is 8-15 cm long. Fallopian tube has two openings: the inner opening is located in the uterine cavity of the uterus, called the "fallopian tube - uterine ostium"; the outer opening is located in the abdominal cavity, called "fallopian tube - abdominal cavity". Most of the fallopian tube blockage is caused by inflammation. which is easy to cause infertility. The causes of inflammatory fallopian tube obstruction can be roughly divided into three types: 1. Ordinary inflammation. 2. Specific infections, such as tuberculosis. 3. Aseptic inflammation, such as endometriosis, local adhesions caused by surgery. Oviduct blockage may cause ectopic pregnancy. The fallopian tube and the ovary are adjacent, and once the inflammation affects the ovaries, resulting in impaired ovarian function, it will affect menstruation. In addition, it may cause ectopic pregnancy, abdominal discomfort, frequent urination, dysuria, constipation, diarrhea, painful intercourse and vaginal bleeding. Among these conditions, ectopic pregnancy is the most harmful to women. Under normal circumstances, after the sperm enters the uterine cavity, it will swim into the fallopian tube, meet the egg in fallopian tube and complete the insemination. After the fertilized egg moves into the uterine cavity and develops into a fetus. If the fallopian tube is narrow or blocked, it will affect the normal walking of the fertilized egg. in some cases, the fertilized egg may be implanted outside the uterine cavity, which is ectopic pregnancy. Ectopic pregnancy usually occurs when the fallopian tube is not smooth or distorted. The light can cause the fallopian tube to be completely blocked. In severe cases, there will lead to bleeding and even life-threatening. In clinic and surgery, the most common cause of tubal blockage is inflammation. For example, the organs near the fallopian tube have inflammation, which can easily cause tubal infection, which leads to congestion, edema, and intrauterine adhesions in the fallopian tubes, which may eventually cause blockage of the fallopian tubes. Therefore, patients must pay attention to treatment, Fuyan pill have good effect on tubal blockage.