The invention provides an earwax protector with a sound-damping function. The earwax protector comprises a sound-damping screen and an earwax protector body which is a hollow cylinder, the replaceable sound-damping screen is mounted in a slot which is arranged at the bottom of the cylinder, barb structures are further arranged on the periphery of the cylinder above the slot, turned edges extending outwards are further arranged at the top of the cylinder, the slot is arranged at the position, about one third distance away from the bottom, of the cylinder, the sound-damping screen is made of a PE (poly ethylene) filter screen, and a nano waterproof coating layer is sprayed on the surface of the filter screen. The earwax protector with the sound-damping function is capable of effectively preventing earwax from entering a hearing aid and damping sound.