A travel cot includes a frame unit, and two articulation units. The frame unit includes four corner blocks, four support legs, four elastic plates, two first connecting bars, and four second connecting bars. Each of the articulation units includes a positioning plate, a clamping plate, a movable plate, at least one positioning ball, at least one compression spring, a pivot shaft, and a hooked piece. Thus, the hooked piece of each of the articulation units is hooked on the clamping plate and the movable plate to limit the bending direction of the second connecting bars, so that the second connecting bars can only be pivoted upward and cannot be pivoted downward by limit of the hooked piece to prevent the second connecting bars from being bent downward and injuring the infant or baby.