PURPOSE: To efficiently perform the assembling work of form panels, in the case of assembling a form by use of a plurality of form panels, enhance the durability of the form panels, and improve diversion rate.

CONSTITUTION: In a method for assembling a form by form panels 1, a columnar connecting member 2 having several fastening holes 22 every fixed interval in the longitudinal direction and collar parts 23, 23 on both side ends, and a separator 3, the connecting member 2 is interposed between the adjacent form panels 1, 1, and the collar parts 23, 23 are laid in the state where they are engagingly locked on both side end parts of the form panels 1, 1, whereby a series of form panel line A is formed. Similarly, a form panel line B is constituted longitudinally opposite to the form panel line A, and the separator 3 is fastened and fixed between the fastening holes 22, 22 of the opposed connecting members 2, 2.