A child’s cough with a rattling throat while sleeping is usually indicative of a respiratory tract infection. For children with mild symptoms, most of them can be cured by themselves by regulating their health and improving their immune system. A child’s cough with a rattling sound in the throat while sleeping may be caused by increased respiratory secretions. Common causes include pneumonia, pharyngitis, bronchitis and other upper respiratory tract diseases, and common pathogens include viruses, bacteria and mycoplasma. Parents can first try to relieve symptoms through lifestyle adjustments, such as drinking more water to dilute the sputum and promote discharge. At the same time, it is important to eat a light diet and avoid sweet, spicy and irritating foods. In addition, it is important to ensure that the child rests normally and avoids catching a cold, which may further aggravate the infection. If the symptoms worsen, it is recommended to go to the hospital promptly, and it is not recommended to use medication without authorization. In conclusion, if the child’s symptoms do not improve with conservative treatment, it is recommended that he or she be seen promptly and the cause of the problem be identified and treated.