The following are the hazards of wearing earplugs: 1. Earplugs block the ear canal, so that the cerumen in the ear canal cannot be secreted and excluded by itself, resulting in the accumulation of cerumen in the ear canal, which can easily lead to earwax embolism over time and induce infection, such as otitis media and otitis. 2. Patients who are allergic, especially in summer or when it is hot, sweating inside the ears easily changes with the earplugs in the ear canal, which can easily lead to changes such as eczema. 4. Long-term wearing of earplugs and long-term exposure to high-decibel noise environmental stimulation can easily induce patients to develop difficult-to-treat diseases such as noise deafness, which affects patients’ hearing and leads to discomfort such as tinnitus and deafness.