Abstract: In mass satellite production, real-time monitoring is essential for the satellite’s detached sockets and star catalog signals. The traditional PXI test equipment was too large to operate, and the manually signal measurement was inefficient. This paper proposes a portable satellite shedding socket monitoring device based on cRIO architecture. It adopts industrial embedded controller, Ni Linux real time operating system, and IO direct acquisition technology, which greatly simplifies the programming mode. With Web remote monitoring technology, real-time application deployment can be solidified into the controller. Code debugging and human-computer interaction can be carried out by remote technology, which can reduce the test cost and the dependence on testers in the test process and improve the test efficiency. The device has the advantages of small size, good portability, great versatility and expansibility. The experiment verifies that this device can achieve the real-time monitoring of satellite status and get the accurate test results. It has been successfully applied to the batch production process of Jilin 1 Business Satellite.