The invention discloses a statistical analysis method. The method is characterized in that in single evaluation analysis, in a single evaluation, a score comparison chart of multiple units under evaluation is displayed; in previous evaluation analysis, a score trend chart of one unit in multiple evaluations is statistically counted; in normal distribution analysis, a professional statistical analysis chart is acquired according to a mathematical model of normal distribution; in linear regression analysis, a regression curve is made according to evaluation results of the units under evaluation and self-evaluation results of the unit above; in distribution state analysis, distribution in one or multiple score areas is marked in a discrete point manner; in score ratio analysis, a score ratio is calculated by a score ratio algorithm. The method has the advantage that by finishing a great deal of data statistical work, an evaluator is allowed to finally straighten out data distribution state, data feature and change rules, and data relations.