A tilted, submerged, reverse-rotation deep rotary tillage device, comprising a machine frame (1), a suspension bracket (2), a transmission (3), and a tilted knife roller (5). The tilted knife roller is formed of rotary tillage knives (6) arranged orderly in the same direction. A tilt angle of 55 to 70 degrees is formed between the tilted knife roller and the moving direction. Knife points of the rotary tillage knives are all towards the right of the moving direction. A column of lateral force balancing knives (16) are provided at the leftmost side of the tilted knife roller, so as to offset an axial component force stressed on the knife roller during tillage. According to the tilted, submerged, reverse-rotation deep rotary tillage device, during high-speed and orderly soil cutting of the rotary tillage knives, a constraint face is reduced at a lateral face, and each rotary tillage knife has an axial component velocity, so that the cut soil is broken due to pulling. The cut soil has a component velocity pointed to lateral tilled farmland when being thrown out, so that the cut soil is thrown to the lateral rear tilled farmland. Thus, repeated tillage is reduced, and the energy consumption for tillage is lowered. In addition, the transmission and a bearing seat (4) are prevented from interfering with un-tilled soil, and the knife roller can sink underground, so as to implement deep tillage.Linvention porte sur un dispositif de labour rotatif profond, incliné, immergé et à rotation inverse, comprenant un bâti de machine (1), un support de suspension (2), une transmission (3), et un rouleau à lames incliné (5). Le rouleau à lames incliné est constitué de lames de labour rotatives (6) disposées de manière ordonnée dans la même direction. Un angle dinclinaison de 55 à 70 degrés est formé entre le rouleau à lames incliné et le sens de déplacement. Les pointes des lames de labour rotatives sont toutes dirigées vers la droite du sens de déplacement. Une colonne de lames déqui
