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A new-concept of no-till wheat planter, named 2BMDF-12 no-till wheat planter, has been developed by China Agricultural University to solve an extremely important problem, of which zero tillage planting of wheat in narrow row spacing (150～200 mm) between rows of very high-levels full length, standing maize stubble in one pass in double cropping area of North China. The combine anti-blocking device that composed power chopping axle and the planting unit of double-disc opener was designed. Field performance test's result showed that the machine could accomplish many procedures, such as stubble chopping, furrow opening, seeds and fertilizer placement etc, in one pass, so the charge of operation could be decreased about 50%. The machine worked well for planting wheat into standing maize stubble and maize stubble shattered. The powered chopping axle resolved the anti-blockage problem that ahead of shank, and the double-disc opener unit reduced the blockage between planting units. Meanwhile the variations for seed depth reduced to 19.8％ and 21.3％ respectively. So this machine can be a good solution to no-till wheat planting in double cropping areas.