A method and a system for recognizing the statuses of electric appliances are provided. In the present method, a loop is taking as a unit for recognition, and a power consumption factor sensor which is capable of measuring a single power consumption factor is used such that the current status of each electric appliance in the loop can be recognized by comparing the probability distribution of the power consumption factor. Since it is not needed to dispose an extra measuring device on each electric appliance, the cost of recognizing the statuses of the electric appliances is significantly reduced.