The invention discloses a wrist type electronic pedometer which comprises a push button, a USB (Universal Serial Bus) interface, a heart rate lens, a pressing type switch, vent holes, an inserting groove, inserting holes, a button, a wrist tape, an inserting rod, a touch screen, an led drive, a light adjusting chip, a camera, a loudspeaker, a vibration sensor, a clock generator, an optical heart rate sensor, an electronic counter, a single chip microcomputer, a storage battery, a voice broadcast module and an alarm unit. As the USB interface is formed in the wrist type electronic pedometer, and a power supply can be supplemented in a push mode, not only is the attractiveness not affected, but also the power supply of the wrist type electronic pedometer can be conveniently supplemented in time, and the wrist type electronic pedometer is simple to operate, rapid and convenient to charge and low in energy consumption; in addition, heart rates can be measured, when the exercise intensity of one day meets a certain grade or abnormal heart rates occur, broadcast reminding can be transmitted in time, then people taking exercise can be prevented from excessive movement, and the security can be improved; the light of a touch screen can be adjusted, and the phenomenon that data cannot be watched under very intense or weak light can be avoided.