Patients with gastroenteritis can skip meals, but they need to be given appropriate fluids to maintain normal energy metabolism or normal function of the body, for example, to prevent hypoglycemia and other related conditions. For patients with gastroenteritis, if they are in a fasting state, they must combine the advice of their primary care physician for formal diagnosis and treatment, and must not skip meals on their own without proper energy supplementation, which can easily cause dysfunction of the organism. The clinical assessment and severity of the disease can be judged by combining blood routine, electrolytes, stool and other related examinations. Symptomatic treatment can be carried out to prevent further forward development of the disease by using relevant drugs such as montelukast, bifidobacterium triptans capsules, glutamine enteric capsules, compound flavopiridol tablets and norfloxacin capsules.