Endometriosis (EMs) is a common condition in women of childbearing age, mainly presenting as pelvic pain and infertility. The ovaries are the most commonly involved organ. Repeated bleeding from endometriotic lesions in the ovary can form ovarian chocolate cysts. When the cyst is >5 cm or in combination with infertility, laparoscopic surgery is an option. A major feature of ovarian chocolate cysts is adhesions. The cyst may adhere to the surrounding pelvic tissues and organs, increasing the difficulty of surgery and the chance of organ damage. The cyst wall is not well layered with the normal cortex of the ovary, making separation difficult. In turn, difficult separation and repeated bleeding can increase the chance of intraoperative electrocoagulation to stop bleeding. It has been shown that thermal injury caused by bipolar electrocoagulation can lead to reduced ovarian reserve function and even premature ovarian failure and amenorrhea. Therefore, it is a challenge for gynecologic lumpectomists to completely remove the endometriosis lesion while maximizing the preservation of normal ovarian tissue. Sakai, a Japanese scholar, has described a study on the application of posterior pituitary hormone for ovarian chocolate cyst debridement thereby reducing the use of bipolar electrocoagulation. Our group has improved this method by using diluted posterior pituitary hormone method for laparoscopic cyst removal. The effect of this method on ovarian function was also observed. Our data show that the method is simple to perform, shortens the operative time, has less intraoperative bleeding, and the commonly used bipolar electrocoagulation for hemostasis is largely unnecessary, thus greatly reducing the thermal damage to normal ovarian tissue.