Described is a high-speed transplanting mechanism that includes an angle-adjusting device about an angle of a duckbill entering soil, the mechanism comprising a rear arm, a front arm, a restoring spring, a control wire, a control wire sleeve and a control adjuster. The front arm is hinged on the mounting base of the planting device, the rear arm is hinged on the duckbill planting device, and the another end of the rear arm and the front arm are axial sliding connection. The control adjuster comprises an adjuster body and a handle fixed on the adjuster body. The restoring spring is positioned between the first limit plate on the rear arm and the second limit plate on the front arm. The end of the control wire is fixed on the second limit plate and, in turn, the other end of the control wire passes through the first limit plate, the restoring spring, the second limit plate and the control wire sleeve, and finally fixed to the adjuster body. The angle of the duckbill into the soil can be adjusted by tightening o
