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The industrial robot cannot measure the distance between itself and the obstacle accurately, and cannot judge the driving path according to the distance between the two, resulting in poor obstacle avoidance effect. Therefore, a new industrial robot obstacle avoidance control system is designed based on ultrasonic ranging technology, and the obstacle avoidance effect is optimized from both hardware and software aspects. Install the ultrasonic transducer with pulse signal in the operation module of the single-chip microcomputer, add a MOS power device as the driving element of the ultrasonic transducer, and apply three types of error amplifiers, EA1, EA2 and EA3, to stably amplify the echo signal to In the circuit, the operational amplifier and the RC network circuit are used to realize filtering and amplification, and the signal detection circuit is used to realize the detection. The ultrasonic sensor is used to accurately measure the distance between itself and the obstacle, and the obstacle avoidance control of the industrial robot is realized by establishing a fuzzy database, locating the diffuse reflection information, and extracting the ranging information in different directions. The experimental results show that the designed industrial robot obstacle avoidance control system based on ultrasonic ranging can accurately measure the distance to the obstacle, and the average obstacle avoidance control accuracy rate is 97.4%, which can realize the industrial robot obstacle avoidance and anti-collision operation.