The invention relates to a single-phase power clock trigger based on charge recovering. The trigger comprises an input inverter used for generating two inverse signals and sending the two signals to a charge recovery unit, a cross-coupling charge recovery unit used for reducing the power consumption of a circuit, and a RS trigger used for latching the output of a charge recycling unit, wherein, the input and the output of the inverter are connected with two input terminals of the cross-coupling charge recovery unit respectively; and two output terminals of the cross-coupling charge recovery unit are connected with two input terminals of the RS trigger. The trigger adopts the single phase power clock (similar to a sine wave power) Pclk to complete the function of the trigger D, input and output signals adopt the square wave and can be directly cascaded with a traditional CMOS logic circuit to complete the logic. Compared with a traditional trigger, the trigger of the invention has the advantages that the power consumption is low, and the extremely low power consumption can be realized particularly when the data change rate is low; the number of transistors is small; and the single-phase clock is adopted.