Suddenly, 11-month-old babies do not eat complementary foods may be related to improper cooking style, indigestion, zinc deficiency and other reasons. Depending on the cause, the situation can be improved by changing the style of complementary food, rubbing the abdomen and supplementing micronutrients. 1. Improper cooking: Improper cooking of complementary foods may cause babies to get tired of eating certain foods, so they suddenly stop eating complementary foods. You can change the style and flavor of complementary food to attract baby’s interest and improve the situation of baby suddenly not eating complementary food. 2. Indigestion: It is possible that the baby has eaten too much food, resulting in indigestion, so suddenly does not eat complementary food. You can rub the baby’s abdomen in the same direction to promote gastrointestinal peristalsis and improve the symptoms of indigestion, thus improving the baby’s sudden refusal to eat complementary foods. 3. Zinc deficiency: A lack of zinc and other trace elements may cause the baby’s appetite to decrease, so that the baby suddenly does not eat complementary foods. You can give your baby zinc supplements to improve the symptoms, such as zinc gluconate oral solution. If the symptoms are not relieved or the baby has other symptoms, it is recommended to go to the hospital in time for active treatment under the guidance of the doctor. The above medications should be used under medical supervision.