To provide a fall prevention structure of an article in which a guide member to guide the going up and down of a falling prevention member can be disposed to a shelf support while a shelf to which the article is put on is supported by the shelf support.

The fall prevention structure A of an article is such that a falling prevention member 5 of an article standing by at an upper side not to interfere with the taking in and out of an article 1 at an usual time in a shelf 2 storing the article 1, lowering by a shelf mouth 4 being guided by an guiding member 3 when earthquake generates, and catching the article 1, is retained to an upper standby position by a magnet 6, wherein in the guiding member 3, fitting holes 16 being fitted to a tip part of a shelf support 12 supporting the shelf 2 are disposed in a back and forth direction at an upper part, a front part of the shelf 2 is raised to the lower side to the extent that a tip part of the shelf support 12 is looked, the fitting hole 16 is fitted to a tip of the shelf support 12, and the guiding member 3 can be attached.