The invention discloses an electric coaster. The electric coaster comprises a frame, a supporting rod and a manual pedal, wherein the supporting rod is connected with the frame; the manual pedal is arranged on the lower part of the frame; the top of the frame is provided with two routing wheels; the supporting rod is provided with two supporting wheels which are positioned on the same horizontal plane as the routing wheels; the frame is suspended on two lines through the two routing wheels and the two supporting wheels; the frame is also provided with a direct current motor for driving the routing wheels to rotate; a rotating shaft of the direct current motor and a rotating shaft of the manual pedal are connected with a transmission main shaft through chain wheels and chains respectively; the routing wheels are driven through the motor to rotate so as to drive the roaster to walk on the lines, so that the working intensity of workers is reduced, the situations such as chain drop and chain breakage of the pedal during use are avoided, and the safety in use of the roaster is guaranteed; the roaster is suspended on the lines through the four wheels in four directions, forward-backward or left-right shade of the roaster is avoided, and the operation safety and normal repair work of the roaster are guaranteed.