The invention relates to a hinge with locking function. The hinge comprises a first hinge plate and a second hinge plate, wherein the first hinge plate is hinged to the second hinge plate through a hinge structure, the second hinge plate is movably assembled with a snapping plate having an avoidance position and a locking position, a return spring for forcing the snapping plate to be in the locking position is arranged between the snapping plate and the second hinge plate, the first hinge plate is provided with a locking shaft capable of moving along with the first hinge plate and separated from the snapping plate being in the locking position, and the locking shaft is provided with a snapping plate matching structure for forming position limiting matching with the snapping plate being inthe locking position so as to achieve the locking between the first hinge plate and the second hinge plate. With the hinge of the present invention, the problem that the normal rotating of the hinge can be affected after the locking mechanism is unlocked in the prior art is solved.