The feeling of swelling in the ear is the early symptom of middle ear cancer, and in the advanced stage, there is obvious pain. Middle ear cancer is a malignant cancer that occurs in the middle ear, accounting for 1.5% of ear tumors and 0.06% of whole body tumors. Measures to prevent swelling in the ear in life: 1. Pay attention to indoor air circulation and keep the nasal cavity clear. 2. Pay attention to rest and ensure sleep time. 3.Actively treat nasal diseases, blowing the nose should not be hard and press the two nostrils closed at the same time, but should be crossed unilaterally to blow the nose. 4.Actively prevent and control colds. 5.Let the water flow out of the ear after swimming. Those who suffer from chronic otitis media should not swim. 6.If there is bleeding discharge in the ear, granulation-like tissue, or facial paralysis and other symptoms, it may be a symptom of middle ear cancer, so go to hospital for diagnosis and early treatment. 7.Avoid external pollution, mainly sound pollution, and try not to be exposed to sound environment that is not easily perceived by the ear such as ultrasonic waves for a long time, especially don’t listen to music with earplugs for a long time, which will cause middle ear disease and sow the hidden danger of middle ear cancer. 8. Pay attention to ear hygiene and cleanliness to prevent accidental ear injuries, especially to avoid regular ear pulling, which can cause accidental injuries. When taking a shower or washing hair, prevent water from flowing into the middle ear, and pay attention to wiping dry after washing to prevent water retention from causing inflammation. 9. If the middle ear is inflamed with pus, early treatment of middle ear diseases is necessary to prevent malignant lesions from occurring and inducing middle ear cancer. 10. Pay attention to the cleanliness of the ear and don’t pull out the ear by force to avoid the occurrence of injury, which is helpful to the occurrence of middle ear cancer prevention. We often neglect our health for various reasons, which is not desirable.