Abstract: In view of problem of influence of power consumption of wireless receiver on lifecycle of wireless sensor network, BFSK super-regenerative receiver, namely a wireless receiver with ultra-low power consumption for wireless sensor network was designed based on OOK super-regenerative receiver. Structure and circuit design of the receiver were introduced. The super-regenerative receiver employs two channels of f1 and f2 to determine output if “0” or “1” based on reserving ultra-low power consumption of OOK, and greatly improves transmission rate. The testing results show that the sensitivity of 2.4 GHz receiver is -86 dB?m and the power consumption is only 215 μW when its transmission rate is 250 kbit/s.