There are many reasons that lead to the appearance of cystic packets fast in the left adnexal area. On the one hand, it is caused by physiological factors. Women will form luteal cysts after menstruation due to the influence of hormones in the body, and the diameter of luteal cysts will usually be less than 3cm, and most of them will disappear on their own with hormonal changes. On the other hand, ovarian chocolate cysts are mainly caused by endometriosis to the ovaries. Chocolate cysts with a relatively small diameter can be treated by herbal conditioning therapy and physical therapy, while those with a diameter of more than 5 cm can be treated by laparoscopic surgery or open surgery. It is important to pay attention to the dynamic review of the uterine adnexal ultrasound to observe the size of the cysts. If the cysts are single and relatively small in size, they are generally not a big problem and do not need special treatment. If the cysts are multiple, more in number and larger in size, there is a high risk of rupture of the cysts or torsion of the cysts and other adverse consequences. Therefore, when cysts are found to be large in size, timely aspiration of cystic fluid or cystectomy should be performed.