Disclosed are a quantum computing task processing method and a quantum computing task processing apparatus, and a quantum computer operating system. The method includes: cutting a quantum circuit corresponding to a quantum computing task into a plurality of quantum sub-circuits based on an evolution process of a quantum state of a qubit in the quantum circuit; separately preparing an initial quantum state of a qubit in each of the quantum sub-circuits; measuring a qubit, obtained after the initial quantum state is prepared, in each of the quantum sub-circuits, to obtain measurement results of each of the quantum sub-circuits; and combining the measurement results of each of the quantum sub-circuits to obtain computation results of the quantum computing task.