Babies spitting bubbles need to be combined with age and accompanying other symptoms to comprehensive analysis, common causes are as follows: 1, teething period: in the teething period spitting bubbles may be related to teething, gum swelling and discomfort, stimulating glandular secretions increased, resulting in spitting bubbles; or salivary gland development gradually mature, resulting in more saliva in the mouth, poor swallowing function, shallow mouth, incomplete lip closure caused by spitting . 2, oral ulcers and stomatitis: ulcerated surface in the mouth, commonly known as mouth sores, swallowing action will lead to pain, spitting bubbles, can be accompanied by refusal of milk, irritability or crying. To give children timely vitamin supplements, pay attention to adding green vegetables, and juices containing vitamins, etc., to help the gradual healing of mouth ulcers and stomatitis. 3, during the cold: cold, cough, etc. may lead to drool bubbles, pay attention to whether the baby has a fever, runny nose, etc., timely symptomatic treatment, pneumonia must be under the guidance of the doctor reasonable use of drugs. Pay attention to the correct care of children, wash with warm water every day, clean gauze wipe around the mouth to avoid prolonged stimulation caused by dermatitis. Pay attention to cleaning the mouth in time after each feeding or adding supplementary food, and give the baby a small amount of warm water.