Children vomiting after breakfast in the morning may be caused by chronic gastritis and indigestion, which can be treated with omeprazole, probiotics, vitamin B6 and other medications according to the cause. 1. Chronic gastritis: If a child is infected by Helicobacter pylori, it may cause chronic inflammation of the stomach, vomiting after breakfast in the morning, stomach pain, bad breath and other symptoms, which need to be treated with drugs such as omeprazole under the guidance of a doctor. 2. Indigestion: If the child ate indigestible food in the morning, it will also cause vomiting, then you can choose to give oral probiotics under the guidance of the doctor, such as Bacillus subtilis bacillus granules, if the vomiting is serious, you can give vitamin B6 treatment. Parents are advised to take their children to the hospital to find out the cause of the illness and take the appropriate medication as prescribed by the doctor.