Disclosed is an important user no-voltage monitoring method for a power utilization dispatching automatic system based on provincial and regional cooperation of a network. The method comprises the steps: 1, a regional power distribution and utilization system establishes a corresponding table of important users and power supply point switches; 2, the regional power distribution and utilization system receives switch position-changing information in real time; 3, whether a switch is a power supply point switch of an important user or not is determined according to the corresponding table of important users and power supply point switches; if so, the system records the involved important user names, and a next step is executed; or otherwise, the step 2 is returned; 4, if it is a switch-off signal, a step 5 is executed; or otherwise, a step 10 is executed in a skipping manner; 5, if other power supply points are all interrupted, a step 6 is executed; or otherwise, the step 2 is returned; 6, a no-voltage warning signal is formed; 7, a regional deploying and power utilization system records the warning information and provides data for warning recovery; 8, the warning content is transmitted to a network deploying part through a three-regional network; 9, if it is a switch-on signal, whether it is no-voltage recovery of an important user or not is judged, and a next step is executed; or otherwise, the step 2 is returned; and 10, if it is no-voltage recovery of an important user, warning recovery data is formed.