One may often need to conduct the inquiry and comparison of information related to weapons and equipment during the teaching and training in the academy and field troops. Traditionally, this can be realized through relation database technology. However, on the one hand, there is no common "data model" available due to the big difference between equipment types. On the other hand, it is very difficult for the relation database to deal with the "connections" between different types of equipment. This study proposes an idea of graph database-based "association" inquiry of the equipment information, aiming to solve the problem of the traditional system.