The invention provides a gas compressor volute structure. The gas compressor volute structure comprises a volute body with a gas inlet and a gas outlet, a drop-shaped control body is arranged inside the volute body, and the control body divides a runner inside the volute body into double runner bodies. According to the gas compressor volute structure, the control body divides the runner inside the volute body into a double-runner structure, so that gas intake uniformity of a next-stage impeller is ensured.