Ultrasonic analyzer can be controlled as the channel of excite ultrasound transducer and the channel of collection through GPIB protocol based on virtual instrument integrated design principles. Oscilloscope or data acquisition cards are utilized as the means of data collection. Meanwhile, huge amounts of data are saving by computer in order to facilitate offline analysis and data processing. By making use of data acquisition card, stepper motor driver can be controlled to motivate in X-Y direction. Thus three dimensional ultrasound scanning, motor control instrument control and data acquisition can be integrating into one system to achieve the ultrasonic c scan testing and imaging system. The experimental results demonstrate that the system is stable with high resolution, and can meet the requirements of the design.