Inclusion Criteria:  Age 22-40 years old, gestational age 31-42 weeks; There was no electroacupuncture treatment before cesarean section; No food and drug allergy, no long-term use of analgesics; .They agreed and only participated in one clinical project and signed the informed consent form.  Exclusion Criteria:  Suffering from complications after cesarean section, such as massive hemorrhage, etc; There was a history of chronic pain before operation; History of cognitive impairment; Skin lesions such as ulcers and eczema at the needling site are not suitable for needling;