Aluminum-clad steel curtain wall system

The utility model relates to the technical field of building outer wall decoration, in particular to an aluminum-clad steel curtain wall system, which aims to solve the problems of large volume and inconvenience in transportation of the traditional outer-clad aluminum profile, and comprises a steel keel and an outer-clad aluminum profile, the outer-clad aluminum profile is wrapped on the outer side of the steel keel, and particularly, the outer-clad aluminum profile is wrapped on the outer side of the steel keel. The outer wrapping aluminum profile comprises a first profile unit and a second profile unit. One end of the first profile unit is open, the other end of the first profile unit is closed, the first profile unit is buckled on the steel keel, and the closed end is detachably connected with the steel keel; one end of the second profile unit is open, the other end of the second profile unit is closed, the closed end is detachably connected with the steel keel, and the open end is clamped with the open en