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Because of numerous microwave equipment and complicated connection relation in TT&C system, it takes multifarious load to have technical testing and calibration about USB/UCB TT&C system on the measurement ship. To resolve the trouble, the signal flow chart in TT&C system and pivotal signal nodes are analysed. An automatic test system is designed and implemented for USB/UCB TT&C system with GPIB port by using LabWindows/CVI programming platform. In this paper, the hardware compose and software programme is also expatiated. In virtue of the system monitor cell controlling and other equipment in system, testing platform is neatly established to accomplish technical testing in the way of wireless or wire and the way of RF or IF. Multi-interface and multi-channels are controlled by measurement and control software, and completion the test function through real time data analysis and processing. The system ameliorate the traditional test method that test by intercalate hardware, and economize cost. It has good expansion, high automation, good interface and applied in the third-order intermodulation in up-link channel. It shows that the automatic test system not only has agile structure and high efficiency but also has good accuracy and well stability.