Disclosed is a window structure provided with the inward opening and the outward opening functions; the functions of inward opening, locking and outward opening are realized through the three different rotation angles of the handle; the technical proposal is characterized in that the window structure comprises a window frame, a window sash and a handle arranged on the window sash; the window structure is characterized in that a converting frame is arranged between the window frame and the window sash; a multipoint lock is arranged on one side of the side frame of the converting frame on the handle side close to the window frame; a lock base is arranged on the side frame of the converting frame close to the window sash side; correspondingly, a lock base is arranged on the window frame and a multipoint lock is arranged on the window sash; a converter is arranged on the converting frame; the closing and opening of the multipoint locks among the window frame, the converting frame and the window sash are realized through the converter; the window sash is connected with the converting frame through a hinge mounted between the window sash and the converting frame; a friction hinge is arranged between the converting frame and the window frame.