Abstract:B bus chip test system is composed of upper and lower computer. The lower computer with two DSP chip as the control chip build two 1553B bus type terminals. The upper computer depend on controlling 1553B bus card with LabVIEW platform, and send various test commands through the serial port. common to complete the DDC's BU-61580 series chip's internal functions, bus protocol function and electrical characteristics test, display various function and timing of the chip test BC,RT, MT three different types terminals. Test environment is same as the chip results in practical use, the chip can be screened, low cost. By the actual application showed that the test system has tested a simple, full-featured, stable performance characteristics, the system can self-test, to meet the user's requirements.