The invention discloses an abnormal energy consumption analysis method and system based on an artificial intelligence algorithm, and the method comprises the following steps: 1, extracting features inabnormal energy consumption data according to the artificial intelligence algorithm, and forming an abnormal energy consumption feature library; 2, analyzing standard characteristics of data curve changes according to the historical normal state data, and establishing and optimizing a standard characteristic library; step 3, according to a standard feature library rule, periodically identifying anon-standard curve in the historical data, judging that the non-standard curve is abnormal, and intercepting an abnormal curve as abnormal energy consumption data; and step 4, according to the abnormal energy consumption data, identifying an abnormal reason, and integrating abnormal energy consumption event information. The abnormal energy consumption state is intelligently identified through theartificial intelligence algorithm, and authority data support is provided for the government to accurately master industrial changes, cope with climate changes, and accurately attack illegal energy consumption behaviors and the like.