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The whole stalk cutting-placementing machine of staminate plant was designed to improve the mechanical level during the seed corn cultivation. The machine consisted of cutting mechanism, stalk conveying mechanism and hydraulic driving system. The cutting mechanism was featured with a supportless revolving cutting design with an inclination cutting angle. To fully cut the plant, the revolving angel velocity of blade was figured out by considering the parameter of flat blade. A blade kinematic study was conducted to work out the conditions that preventing omitting, and the reasonability of blade structure was proved. Stalk conveying mechanism was constituted of round conveying chain with long and short clamping device installed and compression bar. The test on stalk forcing and conveying kinematic analysis showed that the technical parameters were obtained while stalk could be steadily held and conveyed effectively. Stubble height can be adjusted by a parallelogram design drived by hydraulic cylinder. Blade and conveying chain were motivated by the loadsensing hydraulic system. Field experiment proved that the whole stalk cutting-placementing machine of staminate plant was reliable and highly efficient with a 100% cutting ratio and the orderliness ratio was higher than 95%, which sufficiently met the staminate plant cutting requirement. 