Inclusion Criteria:  ASA grade I~ II; aged 18-55 years; BMI 19 ~ 23kg/m2; laparoscopic total hysterectomy and bilateral adnexectomy and/or pelvic lymphadenectomy under elective general anesthesia lasted for more than 2 hours; 5. informed consent has been signed.  Exclusion Criteria:  the patient had a history of abdominal surgery; For patients who are professional athletes and weight trainers, abdominal muscle tension can be changed through strength training need to be excluded. allergic to any of the drugs used in the experiment; pregnant or lactating women; patients with severe mental and neurological symptoms cannot cooperate with the study; those who participated in other clinical trials within 3 months before being enrolled in the study; the researcher believes that other reasons are not suitable for clinical trials; patients who have changed their surgical methods or received only palliative surgical treatment; patients with abnormal coagulation function;