The main common reasons for feeling something blocking the ear are as follows: First, it may be due to the patient’s own poor hearing, which can be neurological or conductive. Neurological means that the nerve function of hearing has changed; conductive means that the ear is blocked and sound cannot be transmitted, causing a decrease in hearing. Conductive cases include blocked earwax, perforated eardrum, otitis media, fluid in the eardrum, and rarely, something growing on the sound pathway. The eustachian tube is the structure that maintains the balance of air pressure between the ear and the outside world. If it does not function well, there will be a constant negative pressure inside the ear, and the presence of negative pressure will also cause a feeling of stuffiness and blockage inside the ear. If this symptom lasts for a long time, you need to go to the hospital for a professional examination.