According to the present invention, a method for searching a precedent using automatic conversion between a general term and a legal term includes: (a) a step of receiving a phrase or sentence including at least one word from a user terminal; (B) a step of extracting at least one general term as a vocabulary morpheme from the received phrase or sentence; (C) a step of converting each of the extracted at least one general term into at least one legal term; and (d) a step of searching for a precedent containing the converted at least one legal term, and providing information on the precedent to the user terminal.
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