Drainage structure for inward opening window

The utility model discloses a drainage structure for an inward-opening window, which comprises an outer side profile provided with a drainage groove and a mounting groove for mounting an external inward-opening sash profile. A first drainage hole for communicating the mounting groove with the drainage groove is formed in the groove wall of the mounting groove, and a second drainage hole for communicating the drainage groove with the outside is further formed in the groove wall of the drainage groove; the second drainage hole is positioned on one side of the first drainage hole; at least one part of the groove bottom face of the drainage groove forms an inclined face, the inclined face can receive water drained from the first drainage hole, and the inclined face inclines downwards from the side close to the first drainage hole to the side close to the second drainage hole. According to the drainage structure for the inward opening window, the drainage efficiency of the drainage groove can be improved. 本实用新型公开了