Hidden bend lower drainage structure of door and window mullion profile

The utility model relates to a hidden curve lower drainage structure of a door and window mullion profile, which comprises an outer frame body, a first glass flange part is arranged on the top surface of the outer frame body, and a first glass embedding groove is arranged between the inner side of the first glass flange part and the outer frame body. A flow guide cavity is formed in the outer frame body, a first drainage hole penetrating to the bottom of the cut-off groove is formed in the upper cavity wall of the flow guide cavity, the cavity bottom of the flow guide cavity extends downwards to form a drainage cavity, and a second drainage hole penetrating to the bottom face of the outer frame body is formed in the cavity bottom of the drainage cavity. According to the utility model, rainwater can be quickly drained by arranging the water intercepting groove. When the rainwater is much, the water collecting and intercepting effects can be achieved, the rainwater is prevented from flowing into a room, and the