Abstract: A stagnant rotating prevention and safety control device for a main shaft is disclosed. The control device is provided with an oil fume detector, temperature control module and a vibration module of a rotating member, characterized in that the oil fume detector is provided with air-withdrawing channel A and air-withdrawing B each connected to the motor top cover and the two bearing position between the rotating shaft, and a air-withdrawing channel C is connected to the main shaft seat in between the top bearing position and the rotating shaft, and an air-withdrawing channel D is connected to the bottom bearing position between the main shaft seat and the bottom bearing for inspection of the amount of lubricant at the individual bearings being normal or abnormal, thereby providing a control device for prevention of stagnant rotation for a main shaft.