Peripheral-central Correlation Study on the Treatment of Chronic Tinnitus With "Dao qi Tong Luo" Based on the Theory of "Connecting the Two Ears to the Brain"

Inclusion Criteria: * Inclusion criteria for patients with chronic tinnitus 1. Chronic tinnitus patients, that is, the course of disease ≥6 months; 2. No contraindications of fNIRS scanning; 3. The age of 20 years ≤55 years old, gender is not limited, right-handed; 4. The external ear canal is unobstructed and the eardrum is intact 5. The average hearing threshold of both ears is \<35dB; 6. Normal expression and understanding ability. Inclusion criteria for healthy subjects <!-- --> 1. No tinnitus, no hearing disorders and other ear diseases; 2. Good health condition, no history of mental disease and nervous system disease; 3. No contraindications of fNIRS scanning; 4. The age of 20 years ≤55 years old, gender is not limited, right-handed; 5. The external ear canal is unobstructed, and the tympanic membrane is complete; 6. Normal expression and understanding ability. Exclusion Criteria: * 1.A history of drug dependence or alcohol addiction; 2.Serious central system diseases or other systemic diseases such as cardiovascular and cerebrovascular diseases; 3. Patients with organic diseases such as craniocerebral trauma; 4. Sudden deafness, Meniere's disease, otosclerosis, acoustic neuroma and other inner ear or auditory nerve diseases; 5.External otitis, acute/chronic otitis media and other external ear middle-ear related diseases; 6. Patients with auditory hypersensitivity; 7. Pregnancy, preparation for pregnancy, breastfeeding population; 8. There are metal implants in the body, fNIRS detection contraindicated.