Chocolate cyst rupture, if left untreated, will lead to severe abdominal pain, ectopic endothelial planting in the pelvis, pelvic adhesions, hemorrhagic shock and other adverse consequences. 1. Severe abdominal pain: Ovarian chocolate cysts contain stale blood, after the rupture of the cyst, the blood enters the pelvic cavity and abdominal cavity, which stimulates the local nerves and causes severe pain, and a small number of patients may also experience gastrointestinal stimulation symptoms such as nausea and vomiting. 2. Ectopic endothelial planting in the pelvis: after the rupture of the cyst, the blood inside enters the pelvic and abdominal cavities, if not treated in time, it will easily lead to the endothelial planting in other parts of the body, which will aggravate the symptoms of dysmenorrhea and even cause infertility. 3. Pelvic adhesion: if the accumulated blood enters the pelvic and abdominal cavities, if not treated in time, it will easily cause the accumulation of blood to be mechanized, which may lead to pelvic tissue adhesion. 4. Hemorrhagic shock: if the chocolate cyst rupture also causes local blood vessel breakage, it may lead to a large amount of blood accumulation in the pelvis, and in severe cases, it may cause hemorrhagic shock manifestations such as a drop in blood pressure and an accelerated heart rate. Therefore, for patients who are found to have ovarian chocolate cysts, if the diameter is more than 5cm, they need to follow the doctor’s instructions and actively undergo surgical treatment, so as not to cause the above negative consequences.