You can eat watermelon during pregnancy for sugar control, but it is recommended to eat it sparingly. Watermelon contains malic acid, protein, amino acids, lycopene, vitamin C and other nutrients, so eating watermelon during pregnancy can help supplement a variety of nutrients. However, watermelon has a high glycemic index of 72, which is a high glycemic index food, so it is recommended that women during pregnancy who need to control sugar eat less watermelon to avoid causing greater fluctuations in blood sugar. Pregnant women who need to control sugar should maintain a low-sugar diet and avoid eating large amounts of high-sugar fruits such as dates and lychees. Pregnant women who need to control sugar are advised to choose their dietary regimen in conjunction with their doctor’s advice, prioritizing foods with a lower glycemic index to avoid poor glycemic control.