If the infant is stuck with sputum, the following first aid measures can be used: first, the child can be given a gentle pat on the back, parents can pat the child’s back with a hollow palm, from the bottom to the top, from the two sides to the center, most of the sputum can be patted out, or the child can be allowed to swallow it inside the stomach; second, the child can be given a mouth to suck out the sputum, after the child has not been significantly relieved by the pat on the back, parents can use This method is also very common, especially at home when there is no way to handle the sputum; third, timely aspiration treatment for children, this situation is suitable for the situation of sputum stuck in the throat in the hospital, which needs to be handled by professionals.