To provide a plywood form for constructing a concrete foundation, which can form a concrete placed surface as a smooth surface besides good releasability of placed concrete, and further can easily perform attachment and detachment of a heat-shrinkable film to and from a plywood, and a method for manufacturing the form.

The plywood form 2 comprises a coated plywood 14 and a crosspiece frame W mounted on the periphery of one surface of the coated plywood 14 or on the inside thereof. The coated plywood 14 is formed by inserting a rectangular plywood 3 into a belt-like bag heat-shrinkable film F having an opening part 10 at one end wound in a roll shape and a plurality of air venting minor-diameter pin holes formed on upper and lower surfaces thereof through the opening part 10 and heat welding the opening part 10, Marker while thermally fusing the heat-shrinkable film F on the top end side of the plywood 3, and thereafter heat-shrinking the heat-shrinkable film F to be tightly and closely fitted to the plywood 3.