The present invention belongs to the technical field of motor accessory application, and concretely discloses an automatic double-shaft dedusting and purifying device for production and an operating method thereof. The device comprises a horizontal type rinsing box, support legs arranged at four corners of a bottom part of the horizontal type rinsing box, a motor installation base with two ends being connected with one side of the support leg and one side of the bottom of the horizontal type rinsing box, a motor arranged on the motor installation base, a rinsing assembly arranged on the horizontal type rinsing box and connected with the motor, a sensor arranged inside the horizontal type rinsing box, and a control assembly support and a control assembly which are arranged on the motor installation base. The control assembly is used for inputting motor rotating speed to drive a gearbox and then double stirring shafts, and water mixing teeth then rotate to accelerate water flow rotation to complete the rinsing operation; meanwhile, according to information, fed back by the sensor, received by the control assembly, a judgment is made, and an air pressurization pump is controlled to start or stop; and according to rinsing requirements, if the air pressurization pump is started to pressurize the inside of the horizontal type rinsing box, the flowing speed of the water flows is raised.