The multi-layer board has a stable structure, meets environmental protection standards, and is suitable for the humid environment of bathrooms. The internal space of the mirror cabinet is rationally planned, with layered drawers and hidden storage compartments set up, which can be used to categorically store toiletries, cosmetics, etc., meeting the daily storage needs. By adopting multi-layer edge banding technology and high-molecular waterproof coating, it effectively resists the high humidity environment in the bathroom and extends the service life of the mirror cabinet.