The utility model relates to a fixed acute frog wing rail composed of wing rails and guardrails. The wing rails and the guardrails are arranged on two sides of frog point rails. The height of the top surfaces of the frog wing rails and the guardrails is from the start points of the guardrails corresponding to the frog point rails to the middle of the guardrails and smaller than that of the top surface of rail type standard height frog rails. The fixed acute frog wing rail has the advantages that by reducing the height of the top surfaces of the wing rails and the guardrails forming an 'acute' area, the problem that frogs newly getting on the rails contact with the tail ends of wheels too early and are excessively fast in abrasion or even fall and chip can be avoided, and service lives of the frogs are prolonged. Meanwhile, wheel set lifting caused by false wheel rims during forward frog exiting is alleviated, and operating stability of trains is improved.