A rotary tiller, comprising a fixed support (1), a fixed blocking plate (2), a fixed block (3), a screw nut (4), a movable rod (5), a connector (6), a universal joint (7), sub-transmission boxes (8), a connecting rod (9), curved knives (10), rotary soil agitators (11), a main transmission shaft (12), rakers (13), a spade plough (14), a soil leveller (15), and a rotary tiller body (16). The fixed blocking plate (2) is mounted on the rotary tiller body (16), the fixed block (3) is arranged at one end of the connecting rod (9), the movable rod (5) is connected between the fixed support (1) and the rotary tiller body (16), the sub-transmission boxes (8) are uniformly distributed on the connecting rod (9), the curved knives (10) are mounted on the rotary soil agitators (11), the main transmission shaft (12) is arranged at an inner portion of the connecting rod (9), the rakers (13) are mounted below the sub-transmission boxes (8), the spade plough (14) is arranged at one end of the connecting rod (9), and the soil leveller (15) is mounted at the lowermost end of the fixed blocking plate (2). The rotary tiller has high usage safety, strong applicability, simple operations and a good rotary tilling effect, and is able to smooth soil.Linvention concerne une fraise rotative, comprenant un support fixe (1), une plaque de blocage fixe (2), un bloc fixe (3), un écrou de vis (4), une tige mobile (5), un connecteur (6), un joint universel (7), des boîtes de transmission auxiliaires (8), une tige de raccordement (9), des lames incurvées (10), des agitateurs de sol rotatifs (11), un arbre de transmission principal (12), des râteaux (13), une charrue-bêche (14), un niveleur de sol (15) et un corps de fraise rotative (16). La plaque de blocage fixe (2) est montée sur le corps de la fraise rotative (16). Le bloc fixe (3) est agencé au niveau dune extrémité de la tige de raccordement (9). La tige mobile (5) relie le support fixe (1) et le corps de la fraise rotative (16). Les boîtes de
