Watermelon is not recommended for pregnant women with high blood sugar. Watermelon contains vitamin A, carotene, vitamin C, folic acid, potassium, phosphorus, etc., which can effectively supplement a variety of nutrients. However, its glycemic index is also high, 72, belonging to the high glycemic index food, after eating may cause large fluctuations in blood sugar, so pregnant women with high blood sugar is not recommended to eat watermelon. For pregnant women with high blood sugar, they should try to choose low-glycemic index fruits, such as apples and pears, etc. Although the glycemic index is low, they should consume them in moderation to avoid blood sugar fluctuations caused by over-consumption. Pregnant women diagnosed with hyperglycemia should actively cooperate with their doctors for treatment, maintain a healthy diet and take appropriate physical exercise such as walking, which will help maintain stable blood sugar.