Inclusion Criteria:

1. Age 60 years or older.
2. Not previously diagnosed with dementia.
3. Meets the diagnostic criteria for mild cognitive impairment, with Montreal Cognitive Assessment scores adjusted by education level, Mini-Mental State Examination score >= 24, and Activities of Daily Living score < 23.
4. Has lived in a nursing home for more than 2 months and plans to continue living there during the study period.
5. No hearing impairment; Hearing Handicap Inventory for the Elderly-Screening Version score < 8, and able to hear binaural beats through both ears.
6. Conscious and able to cooperate with questionnaires and scale assessments.
7. Has not taken medications that may affect cognitive function within 3 to 6 months before the intervention.

Exclusion Criteria:

1. Severe physical disease, major organ failure, or advanced malignant tumor.
2. Diagnosed depression or other psychiatric disorders.

Withdrawal Criteria:

1. Serious adverse events during the study, such as falls, disease recurrence, discomfort caused by the intervention audio, death, or other conditions making continued participation unsuitable.
2. Voluntary withdrawal from the study.

Removal Criteria:

1. Incomplete data resulting in missing information.
2. Missing three or more intervention sessions within 2 weeks without following intervention instructions.
3. Receiving other treatments or interventions related to cognitive function during the trial.