The invention discloses a complex event processing based power quality disturbance event classification monitoring method and belongs to the technical field of power quality monitoring. The power quality disturbance event classification monitoring method includes: extracting characteristic values of original signals and screening the extracted characteristic values; determining atomic events according to the characteristic values subjected to screening; describing complex events by adopting a combined form of the atomic events; determining complex event patterns; adopting a complex event processing engine to detect the complex event patterns to acquire the complex events corresponding to the complex event patterns; determining classification output results of the complex events according to mapping relation of the complex events and the classification output results. By the power quality disturbance event classification monitoring method, types of the power quality disturbance events can be effectively classified, and power quality disturbance signals can be monitored more rapidly and accurately.