A motor-driving single-grain-ejection seeding device and a seeding method using the same, which may complete beating movement and seed taking alternating movement after pneumatic-ejection reseeding at one time. The device comprises a housing (6), divided into a power cabin (A) and a seed cabin (B)； a seed taking roller (9), a seed taking groove (901) capable of containing a single-grain seed space being formed in the surface thereof； a seed brush (8)； a seed discharging mechanism, comprising a spring (2), a beating tube (14), a piston (12) and a piston tube (15), the piston (12) and the piston tube (15) being arranged in the beating tube (14) and being capable of axially moving along the beating tube (14)； and a power mechanism, comprising a control unit and a transmission unit, the control unit comprising a motor (4), a driving plate (5), a hall effect sensor (1) and a magnet (13), the magnet (13) being arranged on the beating tube (14), the hall effect sensor (1) and the driving plate (5) being connected to the motor (4), and the seed discharging mechanism and the seed taking roller (9) being driven by the transmission unit to move. Wherein the power cabin (A) and the seed cabin (B) are communicated with a seed outlet, and the central axis of the beating tube (14), the central axis of the piston tube (15) and the central axis of the seed outlet are located on a same straight line.L'invention concerne un dispositif d'ensemencement à éjection de graine individuelle entraînant un moteur et un procédé d'ensemencement utilisant celui-ci, qui peut effectuer un mouvement de battage et un mouvement alternatif de prélèvement de semence après un réensemencement par éjection pneumatique en une seule fois. Le dispositif comprend un boîtier (6), divisé en une cabine d'alimentation (A) et une cabine à semence (B)； un rouleau de prélèvement de semence (9), une rainure de prélèvement de semence (901) apte à contenir un espace de semence à graine individuelle formé dans sa surface
