The invention relates to a hard alloy saw blade and a machining process thereof, belongs to the technical field of metal machining tool manufacturing, and is suitable for being used in cooperation with a handheld tool. The hard alloy saw blade comprises a hard alloy strip, a saw blade main body and a mounting handle part; and the hard alloy saw blade is structurally characterized by further comprising saw teeth and welding points, the welding points are arranged on the mounting handle part, the welding points are connected with the saw blade main body, and the saw blade main body and the mounting handle part are of an integrated structure; and the hard alloy strip is connected with the saw blade main body, the hard alloy strip and the saw blade main body are of an integrated structure, thehard alloy strip is located at the side portion of the saw blade main body, the saw teeth are arranged on the hard alloy strip, and a connector is arranged at the mounting handle portion. According to the hard alloy saw blade, welding filler is not needed when the hard alloy strip and the saw blade main body are welded, and the hard alloy saw blade has the advantages of being firm in welding, convenient to machine, capable of reducing production and manufacturing cost, long in service life, wide in application range, high in cost performance, small in environmental pollution and the like.