The reason for too much earwax is divided into several categories: 1. Due to high secretion, the cerumen gland of the external ear canal secretes too much greasy earwax, and the grease is sticky, thus causing too much earwax to form a mass and blocking the external ear canal. 2, If a patient has otitis externa or eczema in the external ear canal, more secretions caused by the inflammation or eczema can also cause excessive earwax.