The invention relates to a wearable device which comprises a body. The body comprises an upper shell, a lower shell and an electromyographic
signal detection module, a
flexible display screen and at least one control key are arranged on the outer wall of the upper shell, a
muscle oxygen signal detection module, a circuit board and an
energy storage module are arranged in a containing area of the upper shell, the
energy storage module is electrically connected with the circuit board, the circuit board comprises a
signal modulation module and a main control
chip, the
muscle oxygen signal detection module and the electromyographic signal detection module are electrically connected with an input end of the
signal modulation module, the output end of the
signal modulation module is electricallyconnected with an input end of the main control
chip, and the output end of the main control
chip is electrically connected with the
flexible display screen. According to the wearable device, muscleoxygen number value and bioelectric activity conditions can be acquired and displayed by the
flexible display screen in real time. When the wearable device is used for exercise and fitness or medicalrehabilitation, exercise efficiency is improved, and excessive movement is prevented, so that movement safety of a user is guaranteed.