The invention provides an aluminum-plastic composite profile. The aluminum-plastic composite profile is formed by compounding an aluminum profile and a plastic profiled bar, that is, an aluminum alloyframe is arranged on the outer part, a plastic profiled bar frame is arranged on the inner part, and the aluminum-plastic composite profile is of a multi-cavity structure. The aluminum-plastic composite profile has good thermal insulation performance, the thermal conductivity coefficient is very small, and during assembling, a set angle machine which processes broken bridge aluminum is used for linkage connecting through respective corner braces. Through the scientific design, an aluminum-plastic composite window adopts reasonable energy-saving profiles, and a heat insulating aluminum-plasticdoor and window are an improved type introduced on the basis of an original aluminum alloy window for improving the heat insulation performance of the door and window, and is the first choice of window products.