Middle modules of composite wall

The utility model discloses middle modules of a composite wall. The middle modules constitute the wall body portion used for connecting different modules at the upper portion and the lower portion of the modularized composite wall, a parallelogram structure is adopted, a cooperating block is formed in the upper surface to be matched with a cooperating groove of an adjacent module on the middle modules in an inserted mode, a cooperating groove is formed in the lower surface to be matched with a cooperating block of an adjacent module under the middle modules in an inserted mode, the location and installation between the modules can be conducted, the structure is simple, the modules can be well fixed to one another, the relative movement between the modules is prevented, it is facilitated that the composite wall is formed by stacking the modularized wall body in an array mode, and a single middle module is convenient to manufacture and transport; a first insertion groove is formed in the inner wall of the cooperating groove, a second insertion groove is formed in the surface of the cooperating block, after the modules are located and installed, plug pins can be inserted and fixed in insertion groove structures of the cooperating groove and the cooperating block, the modules are locked and not prone to swinging or breaking away from each other, and the effect that the composite wall is stable integrally is achieved.