There are many causes of crunching inside the patient’s ears: First, for example, the patient himself has TMJ, and when the patient opens his mouth to do activities, it leads to the sound of joints inside the patient’s ears, which often presents a crunching sound. Secondly, consider tinnitus, which is usually formed when the patient is not well rested, anxious, on fire or has inflammation inside the ear, and sometimes the sound of tinnitus will show a creaking sound. Third, consider that there may be a lot of earwax present inside the patient’s ears, which is usually due to more secretion of cerumen glands inside the patient’s ears. Regardless of which of the above causes lead to ringing inside the patient’s ears, it is important to go to the hospital for a detailed examination and further symptomatic treatment after clarifying the cause, so that the patient’s condition inside the ears can be improved.