The invention provides a logic function block, a logic circuit, an integrated circuit and an electronic device. A first power supply and a second power supply are introduced to supply power to an input stage trigger and an output stage trigger of the logic function block, namely two power supplies are intrudced for power supply; the voltage of the two power supplies can be respectively reduced according to whether the logic function block contains a key path or not, and even the voltage of the two power supplies can be reduced to be lower than the minimum power supply voltage of the system, sothat the power consumption can be greatly reduced; under the condition that the clock frequency is fixed, the first clock signal with a large duty ratio can be used to tolerate the circuit delay to agreater extent, so that the circuit works at a lower power supply voltage, the voltage is further reduced, and the power consumption is saved.