According to an embodiment of the present disclosure, an apparatus for processing sensing data comprises an amplifier amplifying analog sensing data inputted from an outside source, an analog-digital converter converting the amplified analog sensing data into digital sensing data, a micro controller unit (MCU) including a signal modulator modulating the digital sensing data to a data wave having a sound waveform, transmittable to a sound input port of a terminal, and an output unit having a sound output terminal corresponding to the sound input port and outputting the data wave to the sound input port through the sound output terminal, wherein the data wave inputted to the sound input port is converted to an information value corresponding to the analog sensing data, and the information value is displayed on the terminal.