When thrush appears in the baby’s mouth, it is usually an infection of oral Candida. This fungal infection is not suitable for reproduction in an alkaline environment, so you can use a 2%-4% aqueous solution of sodium bicarbonate, which means you can use the baking soda solution at home, and apply it to the mouth, which will ensure an alkaline environment and kill the fungus. It is recommended that the breastfeeding utensils used by the child be boiled and disinfected, and the mother’s nipples also need to be scrubbed locally so that cross-infection can be avoided. If the symptoms in the mouth are heavy, you can use mycophenolate, which is usually applied once every 2-3 hours and can also be swallowed, so it is more suitable for small children. Usually, it is recommended to improve the resistance of the baby’s organism. If the baby has recurrent fever, it is especially prone to thrush symptoms, so it is advisable to use immune-boosting drugs for the baby, such as transfer factor or Fucotox lyophilized powder, etc., under the guidance of a physician.