The common causes of ear pain on one side of swallowing include acute otitis media, acute tonsillitis, acute pharyngolaryngitis, etc. General treatment and medication should be taken according to the specific causes. 1. Acute otitis media: when otitis media occurs, the swallowing action will pull the muscles in the ear canal area to cause pain, at this time you can take antibiotics (such as cefixime), the use of decongestant nasal spray (such as furosemide nasal drops) and so on. 2. Acute tonsillitis: Inflammation of the tonsils can cause pain in the pharynx and radiate to the ear, which can be treated by taking antibiotics (such as amoxicillin) and non-steroidal anti-inflammatory drugs (such as ibuprofen). If the condition is recurrent, consider removing the tonsils after the inflammation has subsided for at least 2 weeks. 3. Acute pharyngolaryngitis: Acute pharyngolaryngitis can also lead to radiating pain in the ear, which is mostly related to upper respiratory tract infections, and can be treated with oral antibiotics (e.g., amoxicillin) and antiviral drugs (e.g., ribavirin oral solution). Ear pain on one side of swallowing may also be related to other causes, it is recommended to seek medical attention to clarify the cause of the disease and standardize the treatment under the guidance of the doctor. In addition, the above mentioned medications should also be used under the guidance of a doctor.