In an automatically closing hinge, a first body and a second body are mounted on a fixed shaft, and axial and radial moving members are adjacently disposed inside the fixed shaft. The second body pivoting rearward in relation to the first body enables an inward radial movement of the radial moving member, and during the inward radial movement the radial moving member causes a forward axial movement of the axial moving member. An energy storing member in the fixed shaft is configured to store energy during the forward axial movement of the axial moving member and to release energy for driving the axial moving member to make a reverse axial movement. During the reverse axial movement the axial moving member pushes the radial moving member to make an outward radial movement. The radial moving member during such outward radial movement drives the second body to pivot forward.