The invention discloses a method for determining the limit value exceeding grade of an energy consumption instantaneous value, which comprises the steps that the energy consumption instantaneous valueof the energy of metering equipment of a user is obtained at regular time; if the instantaneous value is less than 8 times of an instantaneous standard value of the user and the instantaneous value is not less than 0.8 time of the instantaneous standard value of the user, the instantaneous value is judged to exceed the limit value; a limit-value-exceeding instantaneous value event of the energy consumption of the user is determined according to limit value exceeding frequency of the instantaneous value of the metering equipment of the user; and the grade of the limit-value-exceeding instantaneous value event of the energy consumption of the user is determined according to the event grade of the limit-value-exceeding instantaneous value, thereby solving a problem of automatically analyzingthe limit value exceeding grade of the energy consumption instantaneous value of the user through a calculation management system integrating water, electricity, gas, heat and energy.