Visible blood vessels in the calf may be caused by certain physiological factors, or it may be the symptomatic manifestation of varicose veins, which should be consulted in time to find out the cause of the disease. 1. Physiological factors: the obvious blood vessels in the calf may be due to the fact that the blood vessels are closer to the skin, the subcutaneous tissue is less, the skin is white, and the blood vessels in the calf can be seen obviously through the skin, which is a kind of physiological phenomenon, and there is no other accompanying discomfort, so there is no need for special treatment. 2. Varicose veins: obvious blood vessels in the calf may be caused by prolonged sitting and standing, such as teachers, nurses and other long-term standing, blood accumulation in the lower limbs, in the case of accumulative damage to the venous valves and venous pressure is too high and caused by blood vessels protruding from the surface of the skin symptoms. The patient may experience discomfort and pain in the lower limbs, and the damaged veins are bulging, dilated and tortuous. 3. If it is caused by varicose veins, professional compression stockings can be used under doctor’s guidance, and at the same time, lifestyle changes can be made to avoid prolonged standing and sitting, and to elevate the affected limbs when lying down. For patients with varicose veins with aggravated pain, medications such as hepatic saponins, aspirin, posterior pituitary gland hormone, etc. can be used, but they are not suitable for long-term use and the medications cannot cure them completely, and surgical treatment is needed. There are obvious blood vessels in the calf, after excluding physiological factors, should promptly consult the doctor and actively cooperate with the doctor’s treatment.