In adults with diarrhea, the first thing to do is to rest and hydrate appropriately to avoid dehydration, and you can drink some thin gruel. If you do not see any improvement after rest and observation, or if the symptoms are severe, you should be sent to the hospital urgently to seek medical help to identify the cause and treat the symptoms. 1. general treatment: correct the disorders of water, electrolytes, acid-base balance and nutritional imbalance, replenish fluids, vitamins, amino acids and other substances appropriately; 2. medication: depending on the severity of diarrhea, the doctor will give montelukast when necessary. This drug will have an inhibitory effect on the gathering of bacteria in the digestive tract, as well as the gathering of viruses and toxins after entering the organism. You can also take probiotics orally, which can inhibit the growth and reproduction of pathogenic bacteria in the intestinal tract and accelerate the recovery of digestive function, synthesize vitamins, meet the metabolism of the body’s growth and development, and achieve the purpose of enhancing the immunity of the body. You can also take fluoroquinolones, which have strong antibacterial activity against Escherichia coli, Salmonella spp. and Shigella spp. that are common in diarrhea; 3. Surgical treatment: If the diarrhea is caused by certain disease factors, such as intestinal tumors, it may also be accompanied by other symptoms, such as wasting within a short period of time, which requires surgical removal according to the condition. If the diarrhea symptoms are mild, you can choose home treatment. In terms of diet, it is recommended to consume millet porridge, rice porridge, oat porridge, black rice porridge and other easy-to-digest diets. Pay attention to rest, you can drink some light salt water, and also need to pay attention to keep warm, do not make the abdomen cold, and pay attention to rest.