The present invention relates to a smart band-shaped thermometer capable of measuring and monitoring body temperature. The present invention includes: a band part (100) having a predetermined width to surround an arm of a user; and a terminal part (200) connected with the band part (100). The band part (100) includes: a first temperature sensor (110) installed on the inner surface of the band part (100) at a distance from the terminal part (200) to make contact with the surface of the arm of the user; and a length control part (120) installed at both ends of the band part (100) considering the thickness of the arm of the user. The terminal part (200) includes: a display (210) displaying temperature measured by the first temperature sensor (110); a memory device (220) accumulating and storing the measured temperature data; a control part (230) outputting a warning signal if the temperature, measured by the first temperature sensor (110), is lower or higher than a reference temperature which is within a normal range set based on an average value derived from the accumulated temperature data; and a warning unit (240) reporting a warning situation acoustically or visually in accordance with the signal outputted from the control part (230). As such, the smart band-shaped thermometer is able to be tailored to each user of which body parts have different thicknesses, and thus, the thermometer is capable of more precisely measuring body temperature, and moreover, as an uncomfortable feeling, caused by contact between the thermometer and the skin of the user, is minimized and a wearing sensation is maximized, so continuous temperature measurement is enabled.이 발명은 체온 측정 및 모니터링이 가능한 스마트 밴드형 온도계에 관한 것으로서, 사용자의 팔을 감싸도록 일정한 폭의 밴드 형상으로 형성된 밴드부(100)가 구비되고, 상기 밴드부(100)와 연결되도록 단말부(200)가 구비되되, 상기 밴드부(100)는, 사용자의 팔 표면과 접촉할 수 있도록 상기 밴드부(100)의 내면에 제1 온도센서(110)가 단말부(200)와 이격하여 구비되고, 상기 밴드부(100)의 양단에는 사용자의 팔 두께를 고려한 길이조절부(120)가 구비되며, 상기 단말부(200)는, 상기의 제1 온도센서(110)로부터 측정된 체온을 표시하는 디스플레이(210