Exercise the baby’s chewing ability according to different age to add different complementary food for exercise, at the same time to ensure that the baby’s complementary food to add safety. 1.4 ~ 6 months baby: baby since 4 months can add a small amount of liquid food, such as rice soup, rice flour, etc., supplemental nutrition at the same time can help exercise chewing ability; 2.6~8 months old baby: 6~8 months old baby due to the gastrointestinal tract function development gradually mature, can add some semi-fluid complementary food and puree complementary food, such as pureed fruits, vegetables, and porridge, etc., and at the same time the baby’s baby teeth began to erupt, add the above complementary food to stimulate the baby’s chewing ability to improve; 3.8~12 months old baby: this stage of the baby has been able to add more soft soft rice, noodles and other complementary food, can help exercise chewing ability, promote the absorption of nutrients; 4. one year old baby: this stage of the baby’s gastrointestinal tract digestive function is relatively good, can eat a variety of complementary foods, breast milk or formula intake is gradually reduced, parents can give the baby eating strips of fruit or cookies to exercise chewing ability. Parents are advised to adopt appropriate methods of exercising chewing ability according to the actual situation of their babies, and to follow up with the pediatrician if necessary.