According to an embodiment of the present invention, a sense of stability may be provided to an infant by listening to a sound that causes a sense of stability in response to a crying sound (or a chucking sound) using a necklace worn on the infant. To this end, in particular, an embodiment of the present invention is a system for providing a sense of stability for an infant using an infant necklace, comprising: a recording unit mounted on an infant necklace to record sound; A first sound transmission unit mounted on an infant's necklace and transmitting the recorded sound; Infant sound pattern analysis unit for analyzing the infant sound pattern corresponding to the frequency, wave height, and waveform of the infant sound among the transmitted sounds, and categorizing the analyzed infant sound pattern; A stability-inducing sound extracting unit for extracting a sound that induces a sense of stability recorded before and after a point in time when the infant's sound is terminated among the transmitted sounds; A stability information selection unit for selecting a stability-inducing sound corresponding to the tangible infant sound pattern when a tangible infant sound pattern is detected based on the sound transmitted in real time; A second sound transmission unit for transmitting the selected sound that causes a sense of stability; And a sound output unit that outputs the transmitted sound that causes a sense of stability.