Diarrhea after catching cold refers to the manifestation of diarrhea, the main reason for the corresponding condition is acute gastroenteritis and gastrointestinal tract dysfunction, the specific treatment plan is mainly the application of drugs, dietary control and daily care. 1. Application of drugs: Most of the cases are caused by acute gastroenteritis with bacterial infection, antibiotic drugs can be applied, such as cefaclor; live bacteria can be applied to regulate the function of the gastrointestinal tract, such as bifidobacteria triple live bacteria; mucosal protective agents can be applied, such as montelukast. 2. Dietary control: try to eat a light diet, do not eat too stimulating, too greasy, too cold food, you can eat more hot soup food, which can help the gastrointestinal function recovery. 3. Daily care: pay attention to warmth, can local hot compresses, help intestinal function recovery. There are many other causes of urination after catching a cold, it is recommended to determine the treatment plan under the guidance of a doctor, to avoid blindly using their own medication.