Abstract: The planter of cotton aimed at mechanical harvesting broken through the technology of agricultural machine and agronomy fusion,and realized multi-function joint operation. Five key technologies were described according to the sowing process：a technique of double row by a device for realizing the optimization of sowing space,the technique of the double contour planting laminating for increasing the consistency of seeding,the technology to improve roadway through sex by horizontal folding of the frame,a double-wheel suppression device that creates a good bed,and a more homogeneous two-stage cladding roller. The technique was feasible by field test proved.

Key words: machine-harvested cotton, seeding process, key technology