According to an embodiment of the present invention, a convenience device for a restaurant comprises: a table having an upper plate portion provided with a rail groove portion on an upper surface thereof and a leg portion supporting the upper plate portion at a lower side thereof; and a multifunctional storage case composed of a body portion provided with a plurality of storage spaces therein and a rail portion formed to protrude in a lower portion of the body portion to move the body portion along the rail groove portion.
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