1. A smart terminal fuzzing method using a multi-node structure, comprising: generating, by a smart terminal fuzzing apparatus, a plurality of fuzzing nodes that are to perform fuzzing on a plurality of smart terminals, respectively; making a connection to a fuzzing client corresponding to the plurality of fuzzing nodes; creating fuzzing commands to be transmitted to the plurality of smart terminals; distributing the fuzzing commands to the plurality of fuzzing nodes connected to the fuzzing client depending on a distribution algorithm; and performing control such that fuzzing is performed by the plurality of fuzzing nodes in compliance with the fuzzing commands through the fuzzing client, wherein distributing the fuzzing commands to the fuzzing nodes is configured to check a number of the fuzzing nodes connected to the fuzzing client and distribute the fuzzing commands to the fuzzing nodes depending on the distribution algorithm, and wherein the distribution algorithm is an algorithm for distributing fuzzing areas depending on the fuzzing client, and is configured to set a sequence of distributed fuzzing areas and distribute the fuzzing areas to the fuzzing nodes according to the set sequence.