The stuffy feeling in the ear after a cold is mainly due to the congestion and edema of the nasal mucosa caused by the cold, which may mechanically block the pharyngo-pharyngeal opening of the eustachian tube, resulting in abnormal function of the eustachian tube. The only outlet in the middle ear is at the pharyngo-pharyngeal opening, so when there is a problem with the function of the pharyngo-pharyngeal opening, it can lead to ear stuffiness in the ear. The main thing to do is to go to the hospital for an acoustic conductance examination and also to determine whether the symptoms of acute otitis media are caused by this cold. Be sure to make a clear diagnosis and treat the symptoms. If the symptoms of otitis media appear, you need to spray the nose with Cochlear or Nesuna and take oral amoxicillin capsules or cefradine capsules.