A universal loading station for a 3D printer includes a knob, a ball screw, a telescopic connecting ring, a telescopic connecting rod, and a loading plate. The top of the ball screw ball screw and the bottom of the knob are connected by a threaded connection. The ball screw is below the knob and includes an outer sleeve which includes a spring. A fixed connection sleeve surrounds the outer sleeve of the spring. A connecting arm is connected to a side of the fixed connection sleeve. The bottom of the ball screw is connected to the telescopic connecting ring. The bottom of the telescopic connecting ring includes a first hemispherical recess, and the center of the first hemispherical recess includes a first hole. The telescopic connecting ring is placed onto the ball screw through the first hole.