After radiotherapy for laryngeal cancer, or during the process of radiotherapy, edema may occur, mainly mucosal edema in the pharyngeal region, and some patients may also experience swelling of the soft tissues in the neck. In such cases, it is recommended to visit an otolaryngology department where a laryngoscopy and routine blood tests can be conducted to help assess the severity of the condition. Generally, nebulizer therapy can be chosen. If there is an accompanying acute bacterial inflammation, antibiotics may need to be considered. Most patients will see a gradual reduction in the degree of swelling after timely medication treatment, but overall, complete recovery requires a relatively long period of time.