The invention discloses a low-power-consumption high-speed zero current switch, comprising a delay controller, a driving stage and a power tube MN, wherein the input end of the delay controller is connected with an external clock CLK, the output end of the delay controller is connected with the input end of the driving stage, and the output end of the driving stage is connected with the gate of the power tube MN; the delay controller comprises a gate signal generator, a sampling circuit and a current controller, and forms a negative feedback loop; and thereby, the voltage values VON and VD of the source-drain voltage of a sampled zero current switch are finally stabilized to 0 at the turn-on and turn-off moments, and the source-drain voltage of the power tube MN at the turn-on and turn-off moments is 0. According to the low-power-consumption high-speed zero current switch disclosed by the invention, a high-speed comparator with high power consumption is no longer used, but the delay controller with low power consumption is adopted to generate turn-on and turn-off signals for the power tube; and in addition, the delay can be controlled by using a low-power-consumption negative feedback circuit, and thus the zero current characteristics of the power tube at the turn-on and turn-off moments can be ensured.