To simplify, facilitate and expedite adjustment on length of a storage part of a light or change of a fluorescent lamp, to enable use of long (intense illumination) fluorescent light and to prevent a cover from dropping out while easing operation to attach and detach the cover.

A cabinet for washstand is provided with a mirror 1 on the center of the front, side cabinets 2 on both sides of the mirror 1, a storage part 4 of a light 3 in long side-way on the upper part. The storage part 4 is formed by extension into the top of the side cabinets 2. A light cover 5 covering the opening front part of the storage part 4 is extended into the top of the side cabinets 2. A holding covers 6 for preventing the light cover 5 from dropping out is provided to be capable of attachment and detachment, on the front of the top of the side cabinets 2.