The invention discloses an energy-saving stator cooling mechanism based on a rotary structure. The energy-saving stator cooling mechanism comprises a mechanism body, wherein the mechanism body is provided with a base, a cooling chamber is formed above the base, an air outlet cavity is formed in the cooling chamber, the mechanism body is provided with an air cooler, nozzles are arranged on the outer wall of the air outlet cavity, air outlets are formed in upper and lower ends of the cooling chamber, a bearing block is arranged on the inner wall of the cooling chamber, a rotary shaft is arrangedon the bearing block, a fixing seat is arranged on the outer wall of the rotary shaft, a die cavity is formed in the fixing seat, and the mechanism body is further provided with a motor. The mechanism body is simple in structure, by means of a multi-position die cavity structure, time consumed for stator cooling is reduced, sample stator making efficiency can be increased effectively, energy consumption during cooling can be reduced effectively by the multi-position structure of the mechanism body, and the energy-saving stator cooling mechanism is convenient to use and high in practicability.