When a child has fever symptoms, they should be taken to the hospital for examination to determine if it is a viral infection. During this period, consuming watermelon in moderation is acceptable, as it has a high water content to help replenish fluids, but excessive consumption may cause diarrhea, especially for children with weak spleen and stomach, the intake of watermelon should be controlled to avoid affecting the digestive system. Watermelon, being a cooling fruit, is beneficial when consumed moderately, but overconsumption can lead to discomfort, such as bloating, diarrhea, especially when the child is experiencing diarrhea, extra caution is necessary. If the child has only a mild fever, encourage drinking more water or replenishing fluids with watermelon can help regulate body temperature. However, under any circumstance, excessive reliance on medication is not recommended to avoid affecting the child’s natural immune system. For children with a fever, moderate consumption of watermelon and ensuring adequate hydration can assist in the fever reduction process, while following medical advice regarding medication use. Most fevers are caused by bacterial or viral infections, therefore, determining the cause through blood tests and subsequently selecting antibiotics or antiviral medication treatment is a crucial step. For low-grade fever (temperature not exceeding 38.5°C), it is preferable to use physical cooling methods and increase fluid intake; once the temperature exceeds this limit, consider using antipyretic medications under medical guidance, such as ibuprofen or pediatric antipyretic drugs, while also considering if accompanying cold symptoms, if necessary, combined with cold medications for treatment. When a child has a fever, parents should watch for signs of infection and seek medical attention promptly. In daily care, avoid giving the child cold or spicy foods, ensure the child has sufficient and good-quality sleep, as these are important measures to aid recovery.