If your child vomits after eating solid foods like idlis or rice but can tolerate liquids such as water and milk, it may be due to temporary stomach irritation (gastritis), a mild infection, or difficulty digesting certain foods, and since your child is otherwise active, it is usually not serious. Emeset can help control vomiting, but the main care is to give small, frequent sips of fluids to prevent dehydration, avoid forcing solid foods for a day, and gradually reintroduce soft, easily digestible foods like khichdi or mashed banana once symptoms improve. Ensure proper rest and observe closely, but seek medical attention if vomiting continues, becomes frequent, is associated with fever, abdominal pain, dehydration (dry mouth, reduced urination), or if your child becomes less active, as these may need further evaluation.