A gimbal load mounting assembly includes a first seating body. The gimbal load mounting assembly also includes a second seating body configured to slidably connect with the first seating body. The gimbal load mounting assembly also includes an adjustment device. The first seating body is configured to be connected with a supporting frame of a gimbal and is slidable in a first direction. The second seating body is configured to mount a load, and is slidable along the first seating body in a second direction. The adjustment device is provided on one of the first seating body and the second seating body, and is configured to drive the other one of the first seating body and the second seating body to move to adjust relative positions between the first seating body and the second seating body.