Ovarian cysts are ultrasound images of ovarian changes where the ovaries appear cystically enlarged. These include physiological and pathological ones. With the change of menstrual cycle, the size of the ovary also changes. The cystic enlargement of the ovary is physiological cyst, usually less than 5 cm, which does not require surgical treatment and disappears after menstruation. Pathological enlargement of the ovary does not change with the menstrual cycle. The most common ones are benign tumors of ovarian origin, such as teratomas and chocolate cysts. Pathological tumors of ovarian origin require treatment. Currently, most of them are treated by laparoscopic surgery, which is less traumatic and faster recovery. There are also some ovarian tumors that suggest abundant blood flow and should be alerted to the possibility of malignant tumors, but they should be judged in combination with clinical examination and blood CA125. At present, it is believed that open surgery is appropriate for ovarian malignant tumors.