The acoustooptic information processor has the features of high detection sensitivity, great processing gain, and the abilities of realtime processing broadband signals and complex signal detection and analysis at the complex electromagnetic environment. It has been applied to the electronic stakeout meterage(ESM) receiver by other countries. With the change of the warefare form,the radar networking is needed,while the use of multiple devices cascaded acoustooptic information processor can process the simultaneously arriving signals.An acoustooptic information processor with multiple devices cascading is presented in this paper.The improvement of the processor gain by using the presented structure has been verified theoretically.