A latch mechanism includes a first housing, a second housing, at least one guiding column, a hook whereon a fourth hole is formed, a fastening component, a latching component, and a first magnetic component for attracting the hook when a display pivots close to a host, so that the hook slides on the guiding column in a first direction to pass through the second housing, the fastening component, and the first housing. The first magnetic component drives the latching component to slide in a second direction simultaneously, so that an end of the latching component is inserted into the fourth hole on the hook, for fixing the display and the host. The latch mechanism further includes a pushing component for separating the latching component from the fourth hole on the hook when being pushed in a direction opposite to the second direction.