The invention relates to a manipulator for a tire vulcanizing machine. The manipulator for the tire vulcanizing machine comprises a rotating arm, a rotating disk assembly, connecting rods, jaw sheet assemblies, a fixed disk assembly and an adjusting steel ring mechanism. One end of the rotating arm is installed on the tire vulcanizing machine, and the other end of the rotating arm is connected with the fixed disk assembly. The jaw sheet assemblies are fixed to the fixed disk assembly. The rotating disk assembly is connected with the jaw sheet assemblies through the connecting rods. The adjusting steel ring mechanism comprises an air cylinder assembly, an adjusting rod, a connector and a plug pin connecting plate. The plug pin connecting plate is fixed to the rotating disk assembly through a bolt. The front end of the air cylinder assembly is connected with the rotating arm. One end of the adjusting rod is connected with the air cylinder assembly through a connecting assembly. The other end of the adjusting rod is connected with the connector through threads at the end of the adjusting rod. The connector is connected with the plug pin connecting plate through a plug pin. The plug pin connecting plate is provided with corresponding plug pin connecting holes arranged according to the dimensions of steel rings of green tires, so that the rapid adjusting steel ring mechanism is formed. The manipulator for the tire vulcanizing machine has the beneficial effects of being convenient to adjust, high in adjusting speed and high in efficiency.