When suffering from a cold and cough, it is appropriate to eat some watermelon as it contains a lot of water which can help replenish the fluids the body needs. It also has a soothing effect on the throat. However, be careful not to eat too much because watermelon has a high sugar content. Excessive sugar intake can exacerbate coughing by increasing phlegm. Additionally, watermelon has cooling properties, so consuming too much can lead to gastrointestinal discomfort. Patients with weak spleen and stomach, already having frail gastrointestinal systems, may experience discomfort from consuming too much watermelon. It is recommended to eat moderate amounts and maintain a light diet, drink plenty of water, and consume more fruits like apples, pears, or grapefruits which are more suitable. It is crucial to actively cooperate with medical treatment during a cold and cough to alleviate symptoms.