Watermelon itself is not toxic, it is just a cold fruit. If you have gastrointestinal diseases, you need to eat a small amount to avoid aggravating the gastrointestinal burden, causing indigestion or abdominal pain, diarrhea and other symptoms. If poisoning occurs, it is probably caused by the use of pesticides or hormones in the cultivation process. If there are mild symptoms of poisoning, such as abdominal pain, diarrhea and other symptoms, no medication is needed, you can pay attention to rest and drink more warm water. Eat a light, easy-to-digest, liquid or semi-liquid food with more vitamins, and control the amount of food to avoid aggravating the gastrointestinal burden. If the symptoms are more serious, you need to go to the gastroenterology department of the hospital in a timely manner, cooperate with the doctor to do the relevant specific examination, combined with clinical symptoms, confirm the diagnosis of symptomatic treatment to avoid accidents.