The present invention relates to a subgraph listing method for an inquiry graph in a data graph. The subgraph listing method for an inquiry graph in a data graph includes the steps of: classifying inquiry graph peaks into a first peak which has to directly map peaks of an inquiry graph to a peak of a data graph loaded in a memory, a second peak which can be mapped through two or more intersections of adjacent information of the first peak, and a third peak which can be mapped by using one adjacent information of the first peak; generating an induced graph formed with the first peak and a main line of the first peak; and exploring a subgraph by using the induced graph.;COPYRIGHT KIPO 2016
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