To everyone knows, more and more patients received repeated caesarean section in China. However, at present it is not known what is it like about their postoperative pain intensity, and is it different from those patients who received primary caesarean section. Thus through postoperative follow-up, the current study aimed to investigate and compare the postoperative pain between patients received primary and repeated caesarean section.

According to whether or not to receive repeated caesarean patients were grouped into group P or group R. For all maternal,standardized epidural anesthesia and caesarean section were performed. Then the pain VAS scores and Ramsay scores at 4h, 8h, 12h, 24h and 48h after the surgery were recorded. And sleep quality at 1 day and 2 day after the surgery were recorded. In addition, pain situation at 1 week and 4 weeks after the surgery was followed up.

Inclusion Criteria:

• single birth
• full-term pregnancy
• in accordance with cesarean section indications
• transverse incision of lower uterine segment

Exclusion Criteria:

• history of dementia, psychiatric illness or any diseases of central nervous system
• accompanying liver or kidney function deficiency
• alcoholism and drug dependence
• patients previously included in this study or currently included in the other clinical study
• patients who have second surgery during the study period
• difficult to follow up or patients with poor compliance
• history of chronic pain

Patients who receiving primary and repeated caesarean section.