The most common case of ear stuffiness after swimming is water in the external ear canal. Experienced people will jump on one foot while having the same side of the ear down, and the water in the external ear canal will flow out after a few jumps. However, sometimes this method does not solve the problem. At this time, you can use a soft napkin, roll it into a thin strip of paper smaller than the diameter of the external ear canal, and slowly insert the paper strip into the external ear canal, so that the water can be sucked out. If this does not solve the problem, there may be other causes and a hospital visit is recommended. For example, cerumen embolism, which does not completely block the outer ear canal when it is dry and does not feel stuffy in the ear, swells after absorbing water and completely blocks the outer ear canal causing ear stuffiness. Acute otitis externa can also occur, which is usually accompanied by ear pain along with ear stuffiness.