To provide a construction method for a concrete structure by use of a concrete curing holding plate for a form capable of ensuring a period of concrete curing even after being released from the form and to provide the concrete curing holding plate for the form.

This construction method comprises a process for temporarily fixing the concrete curing holding plate 3 on an inner face on at least one side of form panels 1 provided by holding a fixed interval therebetween, a process for placing and curing concrete A in the form panel 1, and a process for removing the form panel by leaving the concrete curing holding plate 3 during curing of concrete to continue curing of concrete by the left concrete curing holding plate 3.