The so-called bruises are superficial veins, which are generally visible on the surface of the body, especially where there is less subcutaneous fat, and are more visible in people who are engaged in long-term physical labor. However, the existence of varicose veins in the lower extremities cannot be ruled out, and it is recommended that venous ultrasound and venography be improved to determine whether they exist. If it exists, it is recommended to reduce the standing time to promote the blood return to the lower limbs or wear elastic stockings, etc. In serious cases, surgery can be used for treatment.