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The application of time reversal technique in ultrasonic nondestructive testing is very extensive, which can focus ultrasonic waves in time and space and realize a flaw detection, regardless of the position of the initial source and of the heterogeneity of the medium. In this paper, with the combined application of LabVIEW, signal generator, oscilloscope, ultrasound transducer and GPIB, an acoustic detect testing system has been constructed which achieves some functions including signal generation, acquisition, time reversal processing, and so on. When the test system is working, three different kinds of time-reversal techniques can be chosen to focus the ultrasonic signal:Time Reversal (TR), Inverse Filter (IF) and 1Bit Processing (1 B).The technique of Inverse Filter (IF) has the best ability of localization and a lowest signal to noise ratio in the three techniques.The technique of 1Bit Processing can effectively increase the amplitude of the focusing signal,the amplitude can increase about 3.5 dB.The experiment results have verified that in the process of ultrasonic nondestructive testing the system can realize some functions:signal generation, acquisition, procession and storage and it has good accuracy and adaptability.