Obstetric broad ligament hematoma is one of the serious complications of obstetrics, which can occur during or after delivery. It is caused by poor suturing of the tissue at the end of the incision. The edge of the incision must be sutured to more than 1 cm from the incision, and it is best to tie the knot separately. The hematoma of the birth canal is related to the injury of the birth canal, and there is also the occurrence of hematoma related to blood coagulation dysfunction, which may be formed even with mild tissue injury during labor or surgery. For example, hematologic diseases, especially with thrombocytopenia, insufficient synthesis of coagulation factors in liver diseases, and severe hyperemesis complicated by DIC. Therefore, pregnant women with the above-mentioned comorbidities should be carefully checked and observed, regardless of the mode of delivery, to stop bleeding. What are the prevention methods for hematoma formation in the broad ligament? 1. If the hematoma is not large and has no tendency to continue to grow, anti-inflammatory, hemostatic and physical therapy can be strengthened in anticipation of hematoma absorption. 2.If the hematoma is roughly obviously anemic or continues to increase in size, it is necessary to perform a dissection, cut open the broad ligament, remove the hematoma, suture to stop bleeding or place a drainage tube for drainage, and postoperative anti-inflammatory and hemostatic treatment. 3.Avoid injury-causing factors and treat the hematoma promptly when it ruptures to prevent the occurrence of hemorrhagic shock. 4.Eat a light and nutritious diet, pay attention to dietary balance, drink more water and eat more high-protein food. 5.Prevention should start from prenatal examination, strengthen pregnancy health care and management, pay attention to inquire whether there is personal and family history of venous thrombosis, and actively prevent and treat pregnancy complications during pregnancy.