Preparation process for wedge joint boards

The invention provides preparation process for wedge joint boards. The preparation process includes steps of chipping wood log by the aid of a plurality of saws, trimming, drying, flaking, broaching, butting, slitting, gluing, hot pressing, reinforcing bottoms, sanding, sawing edges, packing and finally warehousing. The preparation process overcomes shortcomings of the prior art, is novel, is applicable to mass production and solves the problem of warping of common boards.