The invention discloses a household energy dispatching method based on a cyber physical system (CPS). The method comprises the following steps: dividing household dispatchable power equipment types and working states according to user comfort requirements; respectively constructing corresponding constraint relations for the working states; establishing an objective function based on minimization of electricity cost, and constructing an optimization model by association with the constraint relations; and finally, determining basic calculation data, and performing solving by use of convex programming. According to the household energy dispatching method based on the CPS, brought forward by the invention, communication between households is completed under regulation and control of the CPS, optimization of energy consumption is realized, and the stability of a power grid is guaranteed; and more importantly, indoor energy scheduling of various devices is carefully completed from the perspective of users, user experience of electricity is guaranteed, and electricity bills are also saved for the users at the same time.