Under normal circumstances, the blood vessels under the skin of the mammary glands are not obvious, part of the skin is fairer, the blood vessels under the skin of women will be clearer, when women are in the late pregnancy to breastfeeding period, by the influence of hormones in the body, the mammary glands will be significantly enlarged, the blood circulation of the mammary glands will be richer, so as to produce a large amount of milk, which is conducive to infant breastfeeding, the mammary glands will appear more obvious varicose veins, which is a normal phenomenon. If there is no local redness, swelling, pain or discomfort, there is no need to worry too much. Varicose veins in the breast can also be seen in liver diseases that cause venous reflux disorders, resulting in poor venous reflux and varicose veins, which generally radiate from around the navel, and require timely consultation at a regular hospital to determine the specific disease situation and then symptomatic treatment.