The invention provides a multipath adapter for monitoring performance indexes of circuit modules arranged in a radio station. The multipath adapter comprises three parts, i.e., an integrated processing module (1), a signal processing module (2), an interface module (3), wherein the integrated processing module (1) is in bidirectional connection with the signal processing module (2) and the interface module (3), and at the same time, the signal processing module (2) and the interface module (3) are in bidirectional connection and are combined to form an integral body. According to the invention, the multipath adapter is connected with a test platform and a detected module, at the same time, provides a physical interface, electrical signal connection and processing of special signals for the five circuit modules in the ratio station, cooperates with the test platform to finish automatic testing of each module, improves the test efficiency of the circuit modules in the radio station, and has the advantages of reasonable design, convenient application, rapid detection, reliable work, convenient connection, simple operation and the like.