To solve the problem of high efficiency inquiring information, the content based on inquiring image designed the algorithm of the feature extraction from the missile image and the system architecture. Dedicated to the missile image inquiring as the research object, by analyzing the characteristics of the missile and missile images, summed up the image features that should be extracted and extraction algorithms, and had finished the designing of the system structure through imitating the image inquiring systems that had been forming in the other fields. This study could provide reference for the next step work of the construction of the missile image inquiring system.