A biosensor is provided with an exercise amount measuring function, having: a microprocessor, for processing signals and data a movement-sensing module connected to the microprocessor, for detecting a movement signal of the user a biological signal-detecting module connected to the microprocessor, for detecting a biological signal of the user a flash memory connected to the microprocessor, for storing an exercise amount and biological signal data generated by the microprocessor and a display unit connected to the microprocessor, for displaying the exercise amount and the biological signal data of the user.
