A hinge of a LCD has a stationary bracket, a first shaft assembly and a second shaft assembly. The LCD had a base and a screen. The stationary bracket is attached to the base. Each shaft assembly is mounted pivotally on the stationary bracket and has an adapting bracket to be attached to the screen. The first shaft assembly has a stationary limiting element, a switching element and a rotating limiting element. The stationary limiting element has a limiting recess with two ends and a narrower stop formed in the limiting recess. The rotating limiting element is pushed by the switching element and has two stops. Pushing the switching element to change the stops of the rotating limiting element respectively corresponding to the narrower stop or the ends of the limiting recess to adjust the limitation of the rotating angle of the screen.