The invention discloses an electrically-driven self-propelled tea leaf reaping device. The device comprises a baseboard, the upper ends of two vertical rods are jointly provided with a mounting plate,a first motor is arranged on the upper surface of the mounting plate, a transverse plate is arranged at the outer sides of the vertical rods, and a threaded rod connected with the first motor is arranged on the upper surface of the transverse plate; a support pillar is arranged at the right side of the transverse plate, a driving mechanism is arranged at the bottom of the support pillar, a draught fan is arranged at the top of the support pillar, and an air inlet pipe is connected to an air inlet of the draught fan; multiple branch air pipes are uniformly arranged at the outer side of the airinlet pipe, a first vertical plate is arranged at one end of the air inlet pipe, a second vertical plate is arranged at the right side of the driving mechanism, and a long tooth tool is arranged between the second vertical plate and the first vertical plate. According to the device, the first motor is utilized for driving the threaded rod connected with the first motor to rotate, the transverse plate arranged at the outer side of the device moves up and down, and the effect of adjusting the height of a tea leaf reaping machine is achieved.