Most otitis media in children is caused by bacterial infection or eustachian tube dysfunction, and its healing time varies from person to person because each individual’s health status, anatomical development and the amount of fluid that accumulates in the otitis media vary. In children, otitis media refers to inflammatory lesions in the eustachian tube, tympanic chamber, sinus and mastoid airspace, which cause pus and pain in the ear canal. It can be divided into purulent otitis media and non-purulent otitis media, which is usually caused by pneumococcal and Haemophilus influenzae infections. In case of secretory otitis media, the child can be gradually cured after 7-10 days with antibiotics, mucus promoters and other medications; in case of chronic secretory otitis media, the course of the disease may need to be extended appropriately. In the case of purulent otitis media, it may improve after 0.5-1 month of treatment. If there is still fluid accumulation in otitis media for more than 3 months, the child is advised to visit the ENT department of the hospital in time and undergo surgery under the doctor’s advice. It is recommended that after recovery from otitis media in children, they should avoid catching a cold in daily life, pay attention to digging their ears less and treat them promptly after getting water in order to prevent the recurrence of otitis media.