This study was taken out to assess the postoperative analgesic efficacy of tetracaine hydrochloride gel in patients with intrauterine adhesion treating with intrauterine balloon.Participates were assigned into two groups by randomly-tetracaine hydrochloride gel group and control group.

Tetracaine hydrochloride gel contains 1% tetracaine hydrochloride, and a fair dose of fungicide, lubricants, remove foam agent, as the long-term local anesthetics. Patients in getracaine hydrochloride gel group were covered with a gauze of tetracaine hydrochloride gel on the external cervical orifice after insert an utrauterine balloon in the uterine cavity. While patients in the control group were covered with a blank gauze after hysteroscopic adhesiolysis. Compare the postoperative analgesic scor and patients' analgesic satisfaction of the two groups and asess the analgesic efficacy of tetracaine hydrochloride gel.

Inclusion Criteria:

• no previous history of hysteroscopic adhesiolysis or surgery on the cervix
• inserted intrauterine balloon in the uterine cavity after hysteroscopic adhesiolysis
• no other diseases

Exclusion Criteria:

• Allergy to local anesthetics
• Patients with chronic pain
• Patients with abnormal blood coagulation function
• Patients with mental illness that can not cooperate
• Patients with previous hysteroscopic adhesiolysis or cervical surgery