Swelling of the lower limbs on the tenth day after thigh fracture surgery is usually related to excessive bleeding, soft tissue injury, obstruction of blood return and other factors, which can be relieved by daily care, medication and other ways to alleviate the symptoms or treatment. 1. Excessive bleeding: If the subcutaneous tissue continues to bleed after thigh fracture, and the amount of bleeding is more than the normal range, it can cause hematoma, resulting in swelling of the lower limbs on the tenth day after surgery. The bleeding should be stopped in time, such as oral phenolsulfonyl ethylamine as prescribed by the doctor, or compression to stop bleeding, and properly immobilized. 2. Soft tissue injury: after thigh fracture, the surrounding soft tissue will be damaged, thus causing swelling. Appropriate cold compresses are recommended to relieve pain. 3. Obstruction of blood flow: If you lie in bed for a long time after a thigh fracture and do not like to move around, it will cause obstruction of blood flow and cause leg swelling. It is recommended to elevate the leg when lying in bed, which is conducive to blood circulation and relieves swelling. If the swelling is serious ten days after thigh fracture surgery, you need to consult a doctor in time and take care of it according to the doctor’s advice to avoid the development of the condition.