The invention discloses an electric energy quality comprehensive evaluation method considering a data dynamic fuzzy dependency relationship, and relates to the technical field of electric power systems. Existing traditional algorithms or intelligent algorithms are mostly static-based power quality evaluation methods, and dynamic change conditions of power quality cannot be expressed. The method comprises the following steps: determining an electric energy quality evaluation index; preprocessing the data; carrying out dynamic fuzzification; carrying out weight distribution; and summing the datato obtain an evaluation result. According to the technical scheme, on the basis of existing evaluation, fuzzification is carried out on the power quality data, the tendency of the data is judged, weight distribution between evaluation indexes and weight distribution on an index time sequence are considered at the same time, and therefore the objective and reasonable purposes are achieved. The method retains the information carried by the electric energy quality data to a great extent, expresses the dynamic change characteristics of the data, and has a positive reference value for the power supply and distribution behavior of a power supply party and the power utilization behavior of a user side.