Abstract: With the increasing proportion of new energy in the power system, distributed photovoltaics are gradually participating in peak shaving tasks.How to correctly count the amount of abandoned electricity has become an important issue related to the promotion of the dual-carbon strategy and the user electricity price subsidy.Aiming at the situation that the distributed power curtailment is difficult to be counted correctly after peak shaving, this paper introduces a method for the statistics of distributed photovoltaic curtailment power modified based on regression algorithm modification.On the basis of analyzing and summarizing the distributed photovoltaic template method, the historical curve information of distributed photovoltaic is added, and the statistical model of distributed photovoltaic power curtailment is established based on regression algorithm modification.This method can better adapt to the changes of the external environment than the template machine method, and can better use the current template machine photovoltaic data than the photometric method.It can realize more accurate statistics of the power curtailment after distributed photovoltaic peak regulation, and provide a reference for the planning, management, investment and construction of distributed photovoltaics.