The invention relates to a motor hoisting and loading-transmitting method for a narrow space. The method comprises the following steps that a forklift is driven to a wall corner along an on-site channel, and a forklift hoisting beam is installed on shoveling feet of the forklift; the forklift hoisting beam comprises an I-shaped steel body, the I-shaped steel body comprises a vertical plate, an upper transverse plate and a lower transverse plate, the vertical plate is provided with a left shoveling foot hole and a right shoveling foot hole, and the end and the middle of the vertical plate are provided with hoisting holes; the shoveling feet of the forklift are inserted in the shoveling foot holes, chain blocks are hung in the two hoisting holes correspondingly, a motor is lifted up through the chain block at the end of the hoisting beam and then pulled through the chain block in the middle of the hoisting beam to a middle position so as to hoist the motor from the wall corner installation position to the channel, at the moment, the forklift hoisting beam is dismantled, and the motor is directly loaded and transmitted. By means of the motor hoisting and loading-transmitting method for the narrow space, the motor can be hoisted from the wall corner position to the straight channel, and therefore the motor can be directly loaded and transmitted by the forklift.