For the target recognition problem of infrared microwave composite detection, proposed a multisensor target recognition method of compound detection based on information association, the difference of the real echo target detection and false target jamming of infrared and microwave extraction analysis, the corresponding characteristic parameters were compared and analyzed by using the method of information fusion. Based on the established mathematical model of target recognition of multisensor detection, and analysis of the infrared and microwave composite detection target recognition problem based on information association, through the experiment proved that this method has better detection effect of target recognition.