For the realtime wireless monitoring of human heartrate, this paper presents a design of wireless power monitor based on Bluetooth Low Energy technology. The chip CC2541 is used to control the acquisition and read the data of wrist pulsewave; CC2541 as a microcontroller chip supports the BLE protocol, which can transmit the pulsewave data to the BLE host device. In this paper, an improved Rwave detection method is proposed. By analysing the fundamental frequency and harmonic of heartrate, this method can reduce the Rwave misjudgment effectively. Through several measurements show that the heart rate monitor can achieve heart rate measurement and wireless transmission, with stable,low power consumption, high precision, rapidly, realtime.