The situation that causes the patient’s toe to be bruised may be caused by local trauma, venous thrombosis, inappropriate shoes and so on, as follows: 1, local trauma: the most common is the local trauma, such as the sprain of the toes during sports, this time there will be localized bruising of the toes, localized bruising. 2, venous thrombosis: due to the obstruction of local blood flow in the toes, mostly seen in the toe artery and toe vein thrombosis, especially venous thrombosis, which can lead to the obstruction of blood flow in the toes, so there can be swelling and bruising of the toes. 3, inappropriate shoes: due to the wearing of inappropriate shoes, such as shoes too small, will cause the toes and shoe friction and extrusion, over time, will cause local soft tissue contusion of the toes, which can also be manifested as bruises and bruises of the toes.