The possibility of drinking soy milk in moderation at dinner to gain weight is relatively low, but excessive drinking of soy milk at night may be bloating and other discomforts, especially before going to bed, drinking a lot of soy milk for a long time will lead to obesity. Soybean milk is a common soybean product in life, has a certain nutritional value, which contains protein, vitamin B₁₂ and phosphorus, magnesium and other minerals. Every 100 milliliters of unsweetened soy milk contains 16 calories, of which 1.1 grams of carbohydrates, 0.7 grams of fat, 1.8 grams of protein, 1.1 grams of dietary fiber, 15 micrograms of vitamin A, 48 milligrams of potassium, 10 milligrams of calcium, and 0.8 milligrams of vitamin E. Drinking some soy milk in moderation at night can provide nutrients for the organism. And the calorie as well as fat content of soybean milk is relatively small, in the evening moderate drinking soybean milk to gain weight possibility is relatively low. However, since the activity level of people usually decreases at night, if you drink too much soy milk, it may lead to indigestion, belching, abdominal distension and vomiting and other gastrointestinal discomforts. If consumed in large quantities over a long period of time, it is also possible to gain weight. Therefore, it is recommended to avoid drinking soymilk too late in the day, and to pay attention to moderate consumption. Soy milk should not be consumed by people who are allergic to soybeans.