When a patient has a perforated eardrum, the time for self-healing varies greatly between different causes and the size of the perforated eardrum. If the perforation is caused by an acute purulent infection of the middle ear, it can generally heal itself in 1-2 weeks, while if the inflammation of the middle ear is more severe, it will take 2-3 months or longer, as follows: 1. Acute purulent infection of the middle ear: For perforated eardrum conditions caused by this factor, if the patient If the patient can be treated with timely and effective anti-infective medication, the inflammation of the middle ear can be treated and recovered more quickly. Once the middle ear inflammation is completely healed, the perforated eardrum can often recover faster until it is completely healed. 2. Heavy middle ear inflammation: If the patient has a heavy degree of middle ear inflammation or does not receive timely and effective anti-infective medication, it may lead to chronic inflammation of the middle ear, forming a condition of chronic suppurative otitis media. Eardrum perforation may then persist for a long time and be difficult to heal. Some patients may also suffer from ear trauma, which can cause eardrum perforation. Smaller eardrum perforations may gradually heal themselves over a period of about 2-3 months, while larger wounds may take longer to heal themselves. For tympanic membrane perforations caused by trauma, most small perforations can heal in 1-2 weeks if the outer ear is kept dry and not infected; large perforations depend on the situation and require regular follow-up examinations at the hospital.