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For unmanned aerial vehicle (uav) for quick accurate mass flight data in the database retrieval, can provide reliable guarantee for the safety of the unmanned aerial vehicle (uav) flight. Traditional data retrieval methods of mass in the process of flight data retrieval, did not consider the connection between the flight data, in the process of retrieving need frequent scanning database, reduce the mining efficiency. Put forward a kind of unmanned aerial vehicles (uavs) based on fuzzy rough set algorithm massive flight data retrieval method in the database. The algorithm in full consideration to the connection between the flight data under the premise of using the automatic indexing technology to analyze real-time flight data in the database, and recycling for flight data, the internal description of characteristic vector calculation of flight data retrieval fuzzy representation of the upper and lower approximation set, massive flight data retrieval model is set up, according to the result of the output of the model using Boolean logic to fuzzy matching, eventually used to retrieve and query keywords approximation of flight data, and the retrieval results according to the similarity sorting. The experimental results show that the algorithm can improve the efficiency of retrieval, the effect is satisfactory..