The contraindications for pregnant women to drink soybean milk include not drinking uncooked soybean milk and not drinking soybean milk together with medicines. 1. can not drink uncooked soybean milk: pregnant women should avoid drinking uncooked soybean milk, which contains more harmful substances, such as saponin, trypsin inhibitors, etc., may have adverse effects on the body. 2. Can not drink soybean milk and drugs together: the nutrients in soybean milk may be destroyed by the drug components, such as tetracycline, erythromycin and other antibiotics, and in severe cases, it will also trigger a toxic reaction. If you have any other dietary problems during pregnancy, it is recommended to consult a professional doctor or dietitian for guidance.