The invention discloses a system and method for processing multi-core parallel assembly line signals of a 4G broadband communication system based on a GPP. In order to meet the strict requirement for the real-time performance of the 4G communication system, the cloud computing idea is utilized, the GPP serves as a computing resource, communication data are processed by utilizing an assembly line processing mode based on the GPP, and a large volume of data and computing tasks are divided into reasonable granularities through a scheduler and are distributed to assembly lines of all levels to be processed respectively. Under the condition that hardware performance is limited, the assembly line mode can meet the requirement for the real-time performance more easily, meanwhile, the time affluence amount is led in, and large delay variation can be borne by the system. Computing resources are fully utilized through reasonable dispatching. According to the system and method for processing the 4G broadband communication system multi-core parallel assembly line signals, three kinds of assembly lines are designed totally, one assembly line is suitable for processing a large data volume and higher in reliability, another assembly line is suitable for processing a small data volume and high in speed and flexibility, and the third assembly line is a composite assembly line based on twp application scenes and with a high degree of parallelism, wherein the performance of the third assembly line is obviously improved.