Babies older than 6 months can start to eat watermelon, but those who are allergic to it, gastrointestinal problems and other special circumstances are prohibited. As the gastrointestinal function of babies under 6 months is not yet mature, and watermelon contains a large amount of fructose and water, which may lead to diarrhea, which is not conducive to the health of the child. Therefore, babies after 6 months can only eat watermelon, and it is recommended to squeeze watermelon into juice for feeding to avoid babies accidentally eating watermelon seeds. And always observe whether the baby has any allergic reaction to watermelon, if the baby has symptoms of digestive discomfort, or rashes around the mouth, edema and other manifestations, you need to let the baby immediately stop eating watermelon.