Aluminum alloy corner die convenient to adjust

The utility model discloses an aluminum alloy corner die convenient to adjust, which comprises an outer aluminum alloy corner template, and a first groove is arranged on the top surface of the outer aluminum alloy corner template; a second groove is formed in the top face of the inner aluminum alloy corner formwork, and the adjusting and fixing mechanism is arranged between the left portion and the right portion of the outer aluminum alloy corner formwork and the left portion and the right portion of the inner aluminum alloy corner formwork so that adjustment can be conducted according to two building plates with different thicknesses. And the strength of an inner angle mechanism is increased through an inner angle supporting rod and a movable inner angle supporting rod which are arranged on the inner aluminum alloy corner formwork, and the movable inner angle supporting rod can be additionally fixed through a first fixing plate and a second fixing plate when needed so that the strength of the inner angle str