The invention discloses a technology for producing a hard alloy woodworking blade by means of fine-particle return scraps. The technology comprises the following steps that S1, the fine-particle return scraps produced in the bar production process are recycled and dewaxed; S2, the return scrap treated in the step S1 are added into a rotary mill with hard alloy serving as a grinding body; and S3, spray particles are formed through a precision press and sintered in a pressure sintering furnace. The dewaxing technology is adjusted, so that it is guaranteed that dewaxing is carried out completely, and the property of the fine-particle return scraps is not influenced; the proper ball milling carbon addition technology is determined; by means of testing of the forming performance of various forming agents, a pressing test is carried out, the proper forming agents are screened out, and it is ensured that the pressing performance of a hard alloy woodworking cutter produced through the fine-particle return scraps is stable, and the forming agents are reasonable in ratio; and the wear resistance and heat resisting strength of the hard alloy woodworking blade manufactured through the technology are remarkably improved, hardness is reasonable, and the manufacturing cost is greatly reduced.