Women drink soy milk drink black soy milk than soy milk drink soy milk is good. Black beans and soybeans belong to soy, containing high-quality protein, unsaturated fatty acids, minerals, vitamins, dietary fiber, soy phospholipids, soy saponins, soy isoflavones, etc., to play antioxidant, cardiovascular protection, promote gastrointestinal motility, improve the role of constipation, improve menopausal symptoms, etc. 1, nutrient comparison: black beans in the protein content of 45% or more, soy protein content of 30% – 40%, black beans than soybeans slightly higher. In addition, black beans in trace elements such as potassium, magnesium, calcium, and vitamins, such as B vitamins, vitamin E, pantothenic acid, etc. is also slightly higher than soybeans; 2, antioxidant effect comparison: black beans and soybeans contain free radical scavenging components, such as isoflavones and vitamin E, can play antioxidant, slow aging effect, but black beans contain isoflavones compared to soybeans slightly more, in addition to black beans also contain anthocyanins, have further enhanced the role of free radical scavenging; 3, protection of cardiovascular function comparison: black beans and soybeans are conducive to lowering serum cholesterol, soy phospholipids, plant sterols, soy saponins, etc. can promote the body cholesterol discharge, conducive to the prevention of thrombosis. Soybean in unsaturated fatty acids, such as linoleic acid, to a certain extent, can make the cardiovascular from damage, to prevent cardiovascular disease.