Improved handle for door and window

The invention discloses an improved handle for a door and a window. The improved handle comprises a base, a rotary shaft hole is formed in the middle of the base, a rotary shaft is arranged in the rotary shaft hole in a rotary mode, a hand shank and a square shaft are arranged at the upper end and the lower end of the rotary shaft respectively, a handle fixing component and a locating piece enabling the square shaft to be in different rotating states are arranged on the base, two handle locating grooves are formed in the bottom face of the base at intervals, a transverse locating screw hole communicated with the right handle locating groove is formed in the right side wall of the base, the handle fixing component comprises a set screw and two sets of handle fixing screws and handle fixing sleeve seats, the two handle fixing screws are arranged in the handle fixing sleeve seats respectively in a sleeved mode, the two handle fixing sleeve seats are arranged in the handle locating grooves respectively in a sleeved mode, a clamping groove is formed in the outer wall of the right handle fixing sleeve seat, a concave ring is arranged on the inner wall of the left handle locating groove, a protruding ring is arranged on the outer wall of the left handle fixing sleeve seat, the left end of the set screw is clamped in the clamping groove, the protruding ring is forced to be clamped in the concave ring in the process that the set screw is screwed in the clamping groove.