You can drink soy milk after pregnancy. Drinking soy milk during pregnancy is good for promoting fetal brain development. Soy milk is rich in protein, and drinking soy milk during pregnancy is one of the better ways to take in high quality protein. Protein is an important component of fetal brain cells, accounting for 30%-35% of the brain weight, and plays a very important role in promoting the development of the language center, as well as stabilizing hormone levels during pregnancy. The phytoestrogens contained in soy milk, namely soy isoflavones, can effectively supplement the mother’s estrogen and progesterone levels, and soy milk contains calcium, iron and other trace elements to help prevent anemia during pregnancy. It is best to use high quality soybeans when drinking soymilk, and it is better to heat and boil it after making it with a soymilk machine, so that the soymilk machine does not boil it, and it may cause discomfort after drinking it because of toxins. During pregnancy, you need to enhance the nutritional balance, avoid single food, but also eat more vegetables, fruits to supplement vitamins and so on.