After a baby gets cold, because the body’s resistance decreases, the gastrointestinal function is also affected, which can easily induce gastroenteritis, gastrointestinal hyper-peristalsis, and the water in the gastrointestinal tract is discharged from the body before it is absorbed, i.e., the baby has symptoms of diarrhea. When diarrhea occurs after a baby gets cold, it can be treated and regulated by the following methods 1. Prevention of dehydration: As soon as diarrhea starts, you should give enough liquid by mouth and continue feeding the child, you can choose the following methods: (1) Oral rehydration salts (ORS): After each diarrhea, give 50~100ml orally for under 2 years old, 100~200ml for 2~10 years old, and as much as you can drink for those older than 10 years old. It can also be given at 40~60ml/kg, immediately after the start of diarrhea. (2) Rice soup with salt solution: 500ml of rice soup + 1.75g of fine salt or 25g of fried rice flour + 1.75g of fine salt + 500ml of water boiled for 2~3 minutes. The dosage is 20~40ml/kg, served in 4 hours, and given orally anytime afterwards, as much as you can drink. (3) Sugar and salt water: 500ml of boiled water + 10g of cane sugar + 1.75g of fine salt. dosage is the same as rice soup with salt solution. If the vomiting or diarrhea lasts for a long time or there is serious dehydration, it is necessary to carry out intravenous rehydration. 2, pay attention to warmth: feed your baby more warm plain water; rub your hands together and put them on your baby’s belly button and massage gently; lay a layer of towels on your baby’s stomach and put a warm water bag, pay attention to the appropriate water temperature and tighten the interface so as not to burn your baby. 3, drug treatment: (1) pathogenic treatment: non-infectious diarrhea generally does not require antibacterial drugs. However, systemic bacterial infection and invasive bacterial infection caused by diarrhea, must be given appropriate systemic anti-infective treatment. Generally watery stools can be treated without antibiotics, mucus stools and purulent blood stools can be treated with antibiotics, with a full course of treatment, and the drugs cannot be stopped without the doctor’s consent. (2) microecological therapy: through the restoration of the human intestinal microecological balance, to achieve the purpose of treatment of intestinal diseases. (3) Adjuvant therapy: intestinal mucosa protective agents (such as sixteen-angle montmorillonite), intestinal dynamics inhibitors, antisecretory drugs, etc. (4) Zinc supplementation therapy: WHO recommends oral zinc supplementation for children with diarrhea while continuing oral rehydration salt therapy, which can enhance immune function and prevent recurrence. (4) Dietary treatment: Infants with mild breastfeeding continue to breastfeed, appropriately limiting the number of nursing sessions or shortening the duration of each nursing session and suspending complementary foods; artificially fed children can be fed with equal amounts of rice soup or diluted milk or other milk substitutes, and gradually transition from rice soup, porridge, noodles, etc. to a normal diet. For lactose intolerant children, add lactase to the diet or remove lactose from the diet. For allergic diarrhea, switch to hydrolyzed milk powder or amino acid milk powder if protein allergy is considered. During diarrhea, continue to eat and give the baby a normal diet appropriate to his or her age, and do not “fast” as much as possible, as fasting can lead to prolonged symptoms and loss of nutrients. In short, children with diarrhea after catching a cold should go to the hospital to check the stool routine, and then treat the symptoms, do not delay, at the same time should give the child saline, pay attention to prevent the baby dehydration. Add intestinal mucosal protector and probiotics as appropriate, and keep warm.