The invention discloses a protective measurement and control integrated device and a protective measurement and control method which are mainly applied to intelligent substations 110 kV and below in voltage class. The protective measurement and control integrated device and the protective measurement and control method are characterized in that a protection function and a measurement and control function are integrated on one device and are respectively achieved through two mutually-independent CPUs, meanwhile a public man-machine interface is also achieved through an independent CPU, and relative independence is kept while function integration. The transformer substation construction cost is saved through the protective measurement and control integrated device, and meanwhile a protection function and measurement and control function integration achieving method is also provided. Based on the protective measurement and control integrated device, sampling data from a merging unit and GOOSE information from an intelligent terminal and other protection devices are received through process layer plug-ins, meanwhile the demands for the protection function and the measurement and control function are met. The protective measurement and control integrated device can be used for circuits, bus couplers, subsections and the like of the intelligent substations 110 kV and below in voltage class.