To provide a fence installation structure for a commodity display base of a relatively simple constitution in which support strength to a falling load of a fence is improved, in which problems of deterioration of appearance and a dead space when the fence is not used are eliminated, a common fence constitution can be employed even in the case of a vertical multi-stage constitution, and fence attaching/detaching operation is easy.

Insertion rods 7a, 7b provided at both end parts of a fence 6 are inserted into vertically long insertion holes 9a, 9b provided in mutually facing surfaces of supports 4. Downward protrusions 8 provided at a lower part of the fence 6 are respectively engaged in engagement holes 10 for positioning bored in an upper surface of a connection rod 5 of a support frame 2 to be positioned.