Curtain wall

The utility model relates to the field of curtain walls, and discloses a curtain wall which comprises a plurality of wallboards and a keel frame, every two wallboards are connected in a clamped mode through connecting devices, the rear ends of the connecting devices are connected with the keel frame in a clamped mode, each wallboard comprises a decorative panel and two connecting grooves, and the connecting grooves are connected with the keel frame in a clamped mode. A waterproof layer is fixedly arranged at the rear end of the decoration panel, a heat preservation layer is fixedly arranged at the rear end of the waterproof layer, the connecting device comprises a connecting plate, shells are arranged on the two sides of the front end of the connecting plate in a penetrating mode, a material plate is fixedly arranged at the rear end of the heat preservation layer, and fixing holes are formed in the front sides of two connecting grooves. The two connecting grooves are formed in the two sides of the front end o