The symptoms of thrombosis on the foot are mainly distinguished from arterial thrombosis or venous thrombosis. Arterial thrombosis refers to the embolism of the artery, which will cause the local blood supply to be insufficient, and the patient will suffer from acute ischemia and hypoxia of the foot, manifesting as pain in the toes, decreased skin temperature, abnormal sensation and pale skin, which may affect the movement of the patient’s foot and ankle. consultation and treatment. If there is a thrombosis of the foot vein, causing deep vein thrombosis, the patient will show swelling of the foot, aggravated when moving, and may have skin pigmentation, etc. Ultrasound examination is needed.