Endolymphatic sac decompression is not a minor surgery. There is no size of surgery; the size of surgery is actually categorized from the level of risk of the surgery. Based on the risk of surgery, it can be divided into high-risk surgery, medium-risk surgery, and low-risk surgery. 1. High-risk surgeries: such as pre-cardiac surgery, valve surgery, coronary artery surgery and so on. 2. Medium-risk surgeries: such as head and neck surgeries, thoracic surgeries, and joint surgeries. 3. Low-risk surgery: such as superficial skin surgery, cataract surgery, breast cancer surgery, etc. For endolymphatic sac decompression, clinically, it is mainly used for Meniere’s disease, intractable vertigo, etc. The principle is to decompress the inner ear by opening the endolymphatic sac, solving the endolymphatic drainage and relieving the fluid buildup, so as to alleviate the symptoms of vertigo and tinnitus in the inner ear. Endolymphatic sac decompression should be preferred in young patients with Meniere’s disease who have functional hearing and who have failed conservative treatment with medications; it is not a minor procedure.