The invention discloses a double-layer integral fixed blade ring for a turbine capable of reversing, and relates to the technical field of gas turbines. The double-layer integral fixed blade ring for the turbine capable of reversing comprises a fixed blade ring body which is composed of double layers of fixed blade ring bodies, the double layers of the fixed blade ring bodies comprise an outer layer fixed blade ring body and an inner layer fixed blade ring body, the outer layer fixed blade ring body is a reversing fixed blade, the inner layer fixed blade ring body is an aheading fixed blade, the bottom end of the aheading fixed blade is connected with a lower ring, the top end of the aheading fixed blade is connected with the reversing fixed blade through a middle ring, and the top end of the reversing fixed blade is connected with an upper ring which is provided with a bolt hole. According to the double-layer integral fixed blade ring for the turbine capable of reversing, by means of two layers of reversed aheading fixed blade and reversing fixed blade, airflow needed by aheading and reversing is provided, the air inlet requirement of moving blades of the turbine capable of reversing is met, and rapid switching between aheading and reversing is achieved; meanwhile, aheading and reversing switching parts are arranged inside a hull, and the hull is not affected; the double-layer integral fixed blade ring has the advantages of being simple in structure, easy to maintain and the like, and large-scale application and popularization are easy.