The invention discloses a four-section type window handle structure convenient to replace parts. The four-section type window handle structure comprises a handle and a handle installation seat; the handle is provided with a drive shaft; a strip-type groove is formed in the drive shaft; the handle installation seat is composed of a base, fixed parts, limiting blocks and a sliding block; an active groove are formed in the middle portion of the base, pipe parts are symmetrically arranged at both sides of the base, limiting grooves are formed in the peripheries of the pipe parts; the sliding blockcomprises a sliding ring body, the inner wall of the sliding ring body is provided with the baffle block, and grooves are formed in the outer wall of the sliding ring; the limiting blocks comprise limiting ring bodies; and the outer walls of the limiting ring bodies are provided with limiting plate parts, spanner parts, and the middle portions of the outer sides of the limiting plate parts are provided with raised lines. Two limiting blocks and a sliding block are used for driving the handle to open, close or tilt the window; the three parts involved in friction are low in production cost, and can be replaced locally when the wear is serious to reduce the replacement cost; and, besides, the grooves can be rolled and contacted by rotating the raised lines, and friction can be reduced and the movement more flexible and light.