A 2BYML-4 ridge notillage maize planter was developed,which can complete the maize stubble smashing and returning to the field,ridging,fertilizing and precision seeding at one time. The structure and working principles of the machine were analyzed. The results of the prototype in field test showed that the qualified rate of ridge height,ridge top width,ridge spacing,the qualified index of grain spacing,the standard deviation,the coefficient of variation,the missing sowing index,the replaying index,the qualified rate of seed covering depth,the qualified rate of fertilization under sowing,and the coefficient of variation was 94.73%,90.64%,90.13%,92%,11.99,5.24%,4%,4%,88.3%,89.7%,9.71% and 10.32%,respectively. The machine has regular ridge shape,with uniform and reasonable distribution of seeds and fertilizers in the field. Its combination of structural parameters and working parameters can better meet the requirements of conservation tillage in dryland agriculture and effectively improve the ecological environment.