Gastrointestinal flu patients are usually caused by viral infections, and patients can have digestive symptoms in addition to the respiratory symptoms of the common cold. 1. Respiratory symptoms. Patients with gastrointestinal flu can have fever, nasal congestion, runny nose, fatigue, headache and other symptoms due to viral infection. 2. Digestive tract symptoms: (1) Vomiting: due to the stimulation of the gastrointestinal mucosa by pathogens or toxic substances thus causing nausea, vomiting symptoms, vomit is mostly gastric fluid, food residues and other stomach contents. (2) Abdominal pain: patients with gastrointestinal flu may suffer from abdominal pain due to increased peristalsis or inflammation of the mucous membrane of the intestinal wall. (3) diarrhea: gastrointestinal flu patients due to the intestinal mucosal inflammation stimulation can be seen in the increased frequency of bowel movements and changes in stool characteristics, stools can be pasty, dilute watery, egg drop soup-like changes. Severe diarrhea can be poor skin elasticity, sunken eye sockets, low urine and even confusion and other symptoms of dehydration. When the occurrence of gastrointestinal flu, generally symptomatic treatment, diet, try to eat some light and easy to digest food, when there is vomiting, obvious diarrhea symptoms, pay attention to timely replenishment of water and electrolytes, and timely to the hospital for medical attention.