The utility model provides a valve valve rod ultrasonic phased array detects scanning apparatus, it includes the fixed link who encloses into the round along the circumference of valve rod, and fixed link's both sides are equipped with a plurality of gyro wheels, and the gyro wheel winds self axis rotation, and the axis of gyro wheel is parallel with the axis of valve rod, and the outer peripheral face of gyro wheel contacts last at least one phased array probe that is fixed with of fixed link with the outer peripheral face of valve rod. This valve valve rod ultrasonic phased array detects scanning apparatus has realized looking into sweeping under not dismantlement of the valve valve rod condition, has improved detection efficiency and positioning accuracy, has reduced measurement personnel's the radiation dose that receives.