To provide a reinforcing support implement for a block fence, which is excellent in seismic strengthening properties, which can increase the strength of the existing block wall by performing only the reinforcement of the block fence without deteriorating the earthquake-resistance strength of the existing block fence, and which enables persons hesitating the execution of block fence reinforcing work to be urged to execute the reinforcing work, by adding profitability to members to be used for the reinforcing work.

This reinforcing support implement comprises: an outer surface plate which is provided on the outer surface side of the block fence B; an inner surface plate 3 which is provided on the inner surface side thereof; a connecting and fixing member 4 for connecting and fixing them in the state of sandwiching a block B1 in between; and a support 5 which is to be fixed to the ground G. The support 5 is journaled to the inner surface plate 3, and a portion, which is to be fixed to the ground G, of the support 5 can be freely changed.