Pain inside the ear is considered to be caused by acute otitis externa, external auditory canal boil, acute otitis media, herpetic tympanitis and other diseases. 1. Acute otitis externa: extensive acute inflammation of the skin or subcutaneous tissues of the external auditory canal, with a burning sensation inside the ear at the beginning of the disease, and as the disease develops, the inside of the ear is swollen and painful, and the pain is gradually aggravated, and even restlessness, and it is aggravated when chewing or talking. 2. External auditory canal boil: limited purulent inflammation of the skin of the external auditory canal. Symptoms of severe pain, because the external auditory canal subcutaneous soft tissue is less, skin and cartilaginous membrane close together, inflammatory swelling stimulation of nerve endings. The boil is on the anterior wall of the external auditory canal, and the pain is aggravated by chewing or talking. When the boil bursts, pus will flow out and the pain will be relieved. 3. Acute otitis media: Inflammation of the middle ear caused by bacterial or viral infection. Patients with otitis media will experience ear pain, tinnitus, and secretions in the ear canal, which can be accompanied by ear stuffiness and hearing loss. 4. Herpetic tympanitis: this disease may be caused by viral infection, after the onset of the disease, the patient will suddenly feel pain in the deep part of the ear, and will be accompanied by a headache, in addition, the patient can also appear ear stuffiness, hearing loss and other phenomena, to be ruptured blisters, the ear will also flow out of the secretion. In addition, there are many other reasons that can cause pain inside the ear, it is recommended that patients seek medical attention in a timely manner to clarify the diagnosis and treatment.