The invention discloses a connecting device and a display screen with the same. Wherein, the connecting device includes: a first connecting member (10), including a first fixed part (11), a first movable part (12) arranged in a manner of moving in a first direction and a first elastic part (13) positioned between the first fixed part and the first movable part, the first fixed part being provided with a first component connecting part (11a) and the first movable part being provided with a mounting through hole (14) which is through in a second direction perpendicular to the first direction; and a second connecting member (2) matched with the first connecting member, provided with a second component connecting part (20a) and an accommodation groove (20b) for accommodating a hole wall of the mounting through hole, the second connecting member having an inward extension state of extending into the mounting through hole and an outward shifting state of shifting out of the mounting through hole, the first movable part having a connection state of causing the hole wall of the mounting through hole to extend into the accommodation groove and a separation state of causing the hole wall of the mounting through hole to extend out of the accommodation groove and the first movable part being in the connection state only under the action of the first elastic part.