Abstract: Objective：To assess the degree of labor pain at the time of intraspinal labor analgesia in women influencing the incidence of cesarean delivery. Methods：Five hundred and ninety patients were enrolled in the study and divided into 3 groups in the light of numeric rating scale (NRS). The woman was with singleton pregnancies, with cervical dilatation of less than 4 cm and vertex fetal presentations. Namely, L group:1-4;M group:5-7;H group:8-10, respectively. The EA procedure was performed at the lumbar spine between 2-3 or 3-4. We inserted a catheter into the epidural space started with 1.0% carbonated Lidocaine to make the volume 5 mL. After the block plane arising, injected a mixture of 0.1% Ropivacaine co-administered with 5 μg of Sufentanil to make the total volume 10 mL in all cases, and connected the patient controlled epidueal analgesia (PCEA) thirty minutes later. The CSEA procedure was started with an intrathecal standard mixture of 0.1% Ropivacaine co-administered with 3 μg of Sufentanil to make the total volume 3 mL in all cases, then connected the PCEA ninety minutes later. To observe and record the NRS score when analgesia was performed. The time of the first stage of labor, the time of the second stage of labor and the way of delivery were recorded in our study respectively. Results：There was no statistically significant differences among the three pain groups in the NRS score after 30 min, dilatation, duration of first stage of labor and duration of second stage of labor, respectively. There was no statistically significant differences among the three pain groups in the incidence of instrumental delivery and cesarean delivery. Conclusions：There is no effect of the degree of labor pain at the time of intraspinal labor analgesia in women on the incidence of cesarean delivery.