Erythroderma in the legs is caused by capillary dilation, which is a kind of varicose vein and belongs to stage C1 among the stages of varicose veins, the symptoms are mild and do not cause great reactions to the patient, only affecting the aesthetics of the patient’s legs, but not causing soreness and discomfort in the patient’s legs. Itching, eczema, hyperpigmentation, local thrombosis, rupture, bleeding of the skin and venous ulcers will not be caused. So the appearance of red blood in the legs can be treated conservatively, do not stand or sit for a long time, wear varicose veins elastic stockings, exercise the muscles of the legs and increase the pump function of the muscles to delay the further development of the disease.