Otitis externa is getting more and more painful at night, which may be caused by the sleeping position compressing the ear, the influence of attention and so on. 1. Sleeping position compression of the ear: If the patient takes an inappropriate sleeping position, it may cause the local drainage of the ear is not smooth, local reflux obstacles, etc., so that the swelling and congestion of the ear is more serious, and when the subcutaneous sensory nerve endings of the external auditory canal are compressed, it will feel particularly painful, thus producing the phenomenon of more and more pain at night. 2. The effect of attention: usually busy with various things during the day, will distract people’s attention, reduce the attention to the ear, so the pain of otitis externa is not so obvious. However, it is quieter at night, which will lead to most of the patient’s attention will be focused on the ear and their own feelings, thus appearing to be more and more pain at night. It is recommended that patients go to a professional hospital for diagnosis and treatment in time during the day to avoid waiting until the evening to cause pain at night.