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A type of maize root stubble harvester based on a lot of test was designed. It can complete a serial of task including digging, picking, clearing, guiding, collecting and windrowing along side position in sequence. This harvester was consisted of the digging root stubble device, the clearing and picking device, the chain type transporting device, the suspension and hydraulic system, which was used for digging and collecting corn root stubble such as maize and sorghum. In this harvester, the digging shovel with offset handle and the flexible picking device with flex tooth were developed by self-innovation, which could finish picking process under surface for the root stubble of non-coupling maize. The field test results showed that the rate of non-picking root stubble was less than 2.8%, the productivity was 0.955~1.086 hm2/h, the operation broad width was 2.6 m and the reliability coefficient of the whole machine was 96.8%. 