A conceptual network generating system that generates a conceptual network showing conceptual relations between words, the conceptual network generating system including: a first searching unit that searches a knowledge source storing search sentences; a first generating unit that analyzes the retrieved first search result sentence; a holding unit that stores the generated first structure information in a memory unit; a second searching unit that searches the knowledge source; a second generating unit that analyzes the retrieved second search result sentence; a calculating unit that calculates similarity between the generated second structure information and the stored first structure information; and a setting unit that generates conceptual network information.