To increase a joining economical effect, stabilize and improve strength and shorten hardening time for joining agent, in the combination of a parapet and a handrail body.

In a combination body of a parapet panel 3 of a parapet 1 and the handrail body 4, an opening part 4B which is provided on a part of the handrail body 4 and is slightly narrower than plate thickness T of an upper edge 3A of the parapet panel 3 and an inverse U-shaped groove 4A provided with an inside width 4C on the inside are inserted into the upper edge 3A, an urethane joining agent 5 is filled into void of about 1 mm between this upper edge 3A and the inside width 4C, and the parapet 1 and the handrail body 4 are fixedly joined and integrated.