Coughing is due to the fact that pulling out the ear stimulates the vagus nerve branches, and the excitement is transmitted to the throat to produce a cough. Ear pulling is pulling out the outer ear canal, where there are many branches of the vagus nerve. When pulling out the ears, the vagus nerve branches are touched, and the excitement is transmitted to the throat, triggering the pharynx to produce linkage symptoms and coughing behavior. This phenomenon does not occur in everyone, but only in some people with sensitive nerves. You should be careful not to pull out your ears too often, too deeply, or too hard. If coughing occurs when pulling out the ear, it is recommended to stop pulling out the ear, otherwise it may lead to deeper penetration of the instrument, affecting the tympanic membrane and causing damage, secondary infection and damage to hearing.