Mixed feeding suddenly rejects the bottle is common in the following cases: 1, as the age of the month increases, the baby has an emotional need, the sense of security and dependence brought by the mother gradually increases, there will be a rejection of the bottle and prefer breast milk phenomenon. 2, mostly seen in 4-6 months old babies, gradually like complementary foods, such as rice flour, egg yolk, fruit puree and other different flavors of food, and reject the bottle. 3, oral disease or systemic disease disease disease During this period, when there are mouth sores or herpes in the mouth, the pacifier is relatively hard and will stimulate the mouth and produce pain, but mostly accompanied by crying, salivation and other symptoms, check the mouth, if there is an abnormality to go to the hospital; or during the illness to the mother’s sense of need is stronger, there will be only like breast milk and refuse the bottle phenomenon, if necessary, you can use a small spoon feeding.