The invention discloses a nuclear power project progress measuring method. The nuclear power project progress measuring method comprises that a nuclear power project is broken down into subprojects according to a work breakdown structure (WBS) which is built in advance; each subproject is quantized to form a progress reference scale form of each subproject; and the value of each subproject, on the corresponding progress reference scale form, is read, and all the values are calculated according to a progress measuring sample form to obtain the nuclear power project progress rate. The nuclear power project progress measuring method realizes real-time accurate monitoring and progress quantization of operation processes of the nuclear power project. In addition, the invention further discloses a nuclear power project progress measuring system.