The present invention discloses a grade determination method of intensity continuous reduction of an energy usage amount. The method comprises the steps of: obtaining daily energy usage amount of a metering device of a user; according to the determination standard of the intensity continuous reduction of the energy usage amount, determining the intensity continuous reduction state of the daily energy usage amount of the user; according to the frequency of the intensity continuous reduction of the energy usage amount of the metering device of the user, determining an intensity continuous reduction event of the energy usage amount of the user; and according to the grade of the intensity continuous reduction event of the energy usage amount, determining the grade of the intensity continuous reduction of the energy usage amount of the user. The demand problems are solved that the water, electricity and gas energy metering management systems are integrated to automatically analyze and obtain the grades of the intensity continuous reduction of the energy usage amount of the user.