The opening of the cervix is usually at the time of labor and delivery, and may cause symptoms such as pain, increased discharge and vaginal bleeding. 1. Pain: The opening of the cervix is usually accompanied by contractions, which involve the abdomen and waist and can cause abdominal pain and lumbosacral pain. 2. Increased secretion: After the cervix opens, it usually manifests as increased secretion. Generally there is no odor, the color is white, and you feel dampness in your underwear. When the cervix is open for more than 3cm, there may be gelatinous and bloody discharge. 3. Vaginal bleeding: After the cervix continues to open, vaginal bleeding will increase significantly and more bloody discharge will be discharged. At this time, the abdominal pain will worsen and there will be a feeling of wanting to have a bowel movement. When the above symptoms occur, it is recommended to consult a doctor for further examination as prescribed by the doctor, to clarify the cause with the help of the doctor, and to carry out targeted treatment or therapy.