Disclosed according to the present invention are a speech-recognizing interactive social robot, a speech recognition system for the interactive social robot, and a method therefor. According to an embodiment of the present invention, the speech recognition system for an interactive social robot may comprise: a speech data receiver unit for receiving speech data transmitted from an external terminal; a text conversion unit for converting the speech data into text; a keyword extraction unit for extracting keywords from the converted text; a response text generation unit for retrieving response text corresponding to the extracted keywords according to metadata stored in advance; a speech conversion unit for converting the response text into speech data; and a transmitter unit for transmitting the converted speech data to the external terminal. The interactive social robot according to an embodiment of the present invention comprises: a speech recognition button unit which operates through a button press to receive a command to start the input of speech; a speech input unit to which a vocal sound uttered by a user is input; a speech transmitter unit which transmits record data obtained from the input vocal sound, to an external system in a PCM data format; and a speech output unit which receives response data from the external system and outputs the received response data.
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