Soymilk can cause elevated blood sugar. Soymilk is a drink made from soaked soybeans that are ground, filtered, and boiled. Soymilk has a certain amount of calories that can cause blood sugar to rise when consumed. However, sugar-free soybean milk glycemic index is not high, and is also rich in protein, phosphorus, magnesium, vitamin A, calcium and other nutrients, so both diabetic patients and healthy people can drink sugar-free soybean milk, help supplement nutrients, to maintain the health of the body. It should be noted that, to avoid drinking too much, otherwise it may cause gastrointestinal discomfort. Patients suffering from hyperglycemia or diabetes should also be treated with medication under the guidance of a doctor, and do a good job of diet management as well as blood sugar monitoring.