Method and system for promoting application of CPRI interface, processing module for CPRI interface

In order to resolve the problem of design difference due to different interface division in the prior art, the invention provides a method and a system of CPRI interface popularization application and a CPRI interface processing module. The method includes: examining the physical structure of a device, setting the CPRI interface, converting the user service data into similar IQ data, processing the C&M information, synchronizing information and similar IQ data application CPRI standard by the CPRI interface, and restoring the similar IQ data outputted by the CPRI interface into the user service data. The system includes a plurality of processing units and a CPRI interface processing module. The CPRI interface processing module comprises an IQ changing unit, a CPRI interface and a de-IQ changing unit. The application of the technology provided by the invention can guarantee the same interface design support on different physical interfaces, avoids the influence of physical interface division for design, meanwhile also can reuse the interface, and simplifies the design.