There are many reasons that can cause diluted water in babies, including indigestion or rapid intestinal peristalsis caused by cold, as well as eating too much liquid food, lactose intolerance, viral and bacterial infections. If the child is in good spirits and can drink water on his own, he can be temporarily rehydrated at home for observation. If there is drowsiness, poor spirits and little urine, it means that the baby is dehydrated and needs to go to the hospital in time. Parents of babies with diluted water should pay attention to the following points. 1. Prevent dehydration: When a child has a high number of stools, it can easily lead to dehydration. Therefore, as soon as the child begins to diarrhea should be given enough liquid by mouth and continue to feed the child, especially infant breastfeeding, to prevent dehydration. The following methods can be used: (1) Oral rehydration salts (ORS): after each diarrhea, give 50-100ml orally to children under 2 years old, 100-200ml orally to those between 2 and 10 years old, and as much as you can drink to 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 to 3 minutes. The dosage is 20～40ml/kg,4 hours to finish, and later on, it can be given orally anytime, as much as you can drink. (3) Sugar and salt water: 500ml of boiled water + 10g of cane sugar + 1.75g of fine salt. the dosage is the same as rice soup with salt solution. 2, dietary adjustments: children with mild cases of breastfeeding can continue to breastfeed, appropriately limit the number of nursing or shorten the duration of each nursing, suspend complementary foods; artificially fed children can be fed with equal amounts of rice soup or diluted milk or other milk substitutes, from rice soup, porridge, noodles, etc. gradually over to a normal diet. For lactose intolerant children, add lactase to the diet or remove lactose from the diet. For allergic diarrhea, consider protein allergy and switch to hydrolyzed milk powder or amino acid milk powder. During diarrhea, eat a light and easily digestible diet, give the baby a normal diet appropriate to its age, and do not “fast” as much as possible, as fasting can lead to prolonged symptoms and nutritional loss. 3, pay attention to abdominal warmth: children’s belly button cold easily lead to increased intestinal peristalsis, aggravating the number of diarrhea, so pay attention to reduce children’s belly button cold. 4, drug treatment: (1) pathogenic treatment: non-infectious diarrhea generally does not require antibacterial drugs. However, systemic bacterial infections and diarrhea due to invasive bacterial infections must be given systemic anti-infective treatment. General watery stool can be used without antibiotics, mucus stool, pus and blood stool can be selected antibiotics, with a full course of treatment, can not be stopped without the consent of the doctor. (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. Parents need to observe the baby’s mental status, body temperature, number, nature and amount of stools, urine output and food intake. Children with infectious diarrhea need to be properly isolated to prevent cross-infection. Observe the baby for signs of dehydration and take good care of the buttocks.