Abstract: Abstract: Huang-Huai-Hai region is the main production area of peanut, where currently exist some outstanding problems, such as multiple operations of multiple machines in routine machine sowing work, high production cost, high energy and time consumption, and missing farming season. In addition, the traditional way of no-till seeding is not fit for peanut no-till seeding under the coverage of the wheat straw, and 3 major technical problems exist: soil-buried parts of machine are blocked with grass, which can’t guarantee the smooth operation; the seeds may be planted on the wheat straw, causing the seeds are above the soil and not into the soil; soil-covering is unreliable, causing the seeds are not covered by soil. In this paper, a no-till peanut planter under the coverage of the wheat straw based on "cleaned area seeding" was developed. Firstly, smash the wheat straw on the surface of the fields which would be seeded, then pick up and collect them, and spread backwards after loading; secondly, finish stubble cutting and seed-bed preparation before the straw fell down, and finish fertilization and seeding work in "cleaned area"; finally, the smashed straw was evenly covered on the fields after planting, and the whole process, including crushing the wheat straw, cleaning the field, fertilizing, and covering the seed bed with wheat straw, was all finished in relatively "cleaned area". With the combination of analytical calculation and experimental optimization, 4 parts of the whole machine were involved to be designed based on the working principle of the machine, and Y typed cutting device was adopted in the link of crushing and collecting straw. In order to meet straw smashing and picking requirements, the optimized working parameters and structure parameters of knife roller were obtained by analyzing the absolute speed of the swung knife, which was synthesized by the machine forward speed and the rotary speed of knife shaft. Meanwhile, the parameters such as the rotary speed of the horizontal screw feeder were determined through wheat straw pushing volume. Impeller type lifting and throwing structure was used during the links of straw loading, throwing and evenly covering. According to the energy conservation law, combined with the configuration of the machine, the main structural and motional parameters such as throwing impeller, pipes, and lifting height were designed by calculation. According to the principle of non dynamic passive rotation, the impeller type evenly throwing mechanism was designed, achieving high speed rotation of the impeller through the wind force generated by the fan, which was installed in the machine, and then the straw was scattered and spread to the surface of the field evenly. The reverse shallow rotary tillage method was designed to break the stubble and soil during the seeding bed preparation. Compared with traditional rotary parameters, the smaller the shallow rotary tillage tactical diameter and rotational speed were, the better the stubble and soil breaking effect would be, and meanwhile, the energy and power consumption were eased. Matched with the designed peanut no-till planter during fertilizing and seeding session, the furrow opener, one of the key soil-buried components, was designed to prevent the soil blocking, solving the clogging problem of seed spout. Peanut no-till planter under the coverage of the wheat straw, affiliated with high-powered tractor of over 75 kW, had the working width of 2 400 mm and the pure productivity over 0.53 hm2/h. The field tests and measurement results showed that the average length of straw was 115 mm after work, the uniformity ratio of straw mulching was 83%, the average depth of sowing and fertilizing was 46 and 59 mm respectively, the qualified rate was 98% and 89% respectively, and the yield was about 5 749.5 hektare. This machine is suitable for the coverage of the straw, which can crush the wheat straw, clean the seedbed, fertilize, and cover the soil and seed bed with wheat straw at one time; the operation is smooth and reliable and has high seeding quality, and all the operating indices can meet the requirements for main peanut producing areas. Meanwhile, the research on the method of “cleaned area” seeding may be applicable for other dryland crops such as wheat, corn, and soybean, providing appropriate equipment to promote the mechanization of prohibiting straw burning.