After an infant chokes on milk, you can tell if the child has choked his or her lungs by the way he or she behaves. If the child chokes the lungs, the common symptoms are cough, shortness of breath and fever. 1. Cough: Because cough itself is a protective reflex of the body. If milk chokes the lungs, it may cause a violent cough. 2. Shortness of breath: choking into the lungs can easily lead to inflammation and produce secretions that lead to hypoxemia, resulting in increased respiratory rate, which is manifested as shortness of breath. 3. Fever: If choking on milk to the lungs, it may lead to inflammation of the lungs, so it will be accompanied by fever and other symptoms. Generally speaking, infants are mainly bronchopneumonia, its performance is often atypical, often manifested as spitting up, choking, spitting up bubbles, milk volume decline, shortness of breath, fever and other manifestations, if the baby appeared the above symptoms, it is recommended that timely access to hospitals, improve the chest radiographs and other related examinations, and comply with the doctor’s instructions to be targeted treatment.