The eardrum is not visible to the naked eye because the human external auditory canal is S-shaped and the length of the external ear canal is about 2.5cm. The external ear canal is narrow and the eardrum is located in the deepest part, separating the outer ear from the middle ear. The main purpose of the cerumen is to protect the external canal and prevent foreign objects and dust from entering the external ear canal, so the eardrum is not visible to the naked eye. If you need to observe the eardrum and confirm the presence of tympanic membrane perforation, congestion and corresponding inflammation, you need to go to the hospital to see an otolaryngologist with a professional electronic otoscope or Sigmoidoscope to observe the eardrum for any corresponding pathology.