In swimming pools, due to the increase in the number of swimmers, the resulting otitis media has increased by 20% compared to the past, and children are more susceptible to hygienic infections. In patients with otitis media caused by swimming, it is due to the swelling of secretions in the external ear canal in contact with water, resulting in otitis media triggered by infection of the ear canal, and in severe cases, headaches and ear pus. Children swimming, lack of experience, coupled with the position of the Eustachian tube is closer to the horizontal position than adults, after swallowing the pool water bacteria can easily enter the ear through the Eustachian tube, more likely to cause otitis media. Some people like to use cotton swabs to pull out the ear after the ear into the water, that cotton swabs can stop the itch, but also can suck out the water, which is not desirable, because the water into the ear canal, the skin becomes soft and easy to break, with cotton swabs, once the force is too large, it will damage the external ear canal, and the head of the swabs are also easy to fall in. Dry earwax in the ear becomes wet, the cotton swab into, but it is easy to put the ear canal wall of the earwax top to the depths of the pressure to the eardrum as thin as paper, affecting the vibration of the eardrum, causing stuffiness, pain, or even inflammation. Water in the ear discharged in a timely manner after the common methods 1, jumping water: tilt your head to the side of the ear into the water, so that the ear holes down, the same side of the single-footed in situ jumping a few times, and at the same time pulling the ear with your hand, straighten the ear canal, so that the water flows out of the trend. 2, the activity of the external auditory canal: you can continuously use the palm of your hand to press the ear screen or pull the ear corridor with your fingers; or repeatedly do the open-mouth action, the activity of temporomandibular joints, the external auditory canal skin constantly up and down, left and right, so that the water out of the external auditory canal. 3, the external auditory canal cleaning: use a clean fine cotton swab to gently probe into the external auditory canal. In addition, the children who themselves have otitis media or rhinitis, sinusitis and other diseases should be prohibited from diving. 4, it is recommended to wear swimming special ear plugs to prevent water ingress. In addition, children with otitis media or rhinitis, sinusitis and other diseases should be prohibited from diving. 5, such as the occurrence of ear infections, should be promptly to the specialist clinic for diagnosis and treatment, so as not to delay the condition, resulting in lifelong regret.