If your baby keeps clearing his throat, it usually indicates discomfort in the oral cavity and throat. Pay attention to the following possible conditions: 1st, pay attention to whether your baby has chronic laryngitis, where viruses, bacteria or mycoplasma or chlamydia are attached to the surface of the mucous membrane, causing discomfort in the throat and leading to throat clearing. 2nd, consider that your baby may have chronic rhinitis, sinusitis or otitis media, which may cause throat clearing due to the backflow of secretions that stimulate the throat. Gastric reflux through the esophagus can cause throat irritation. If older babies have chronic upper gastrointestinal diseases such as gastritis, gastric ulcer, or bile reflux gastroesophagitis, throat clearing can also occur.