The invention discloses a comprehensive index evaluating method for rock burst. The method comprises the following steps of evaluating weights to rock burst by geological and mining factors in a mining area through comprehensive analysis; respectively calculating danger indexes of the weights, and taking the maximum value as the final danger comprehensive index for rock burst; and thus determining the danger class, state and preventing policy for rock burst in the mining area. The comprehensive index evaluating method for rock burst disclosed by the invention is an advanced evaluating and predicting method which is simple and easy to operate and use. The danger level and class for rock burst can be determined by just analyzing the geological and mining factors in the mining area, and then, related monitoring and preventing preparation for rock burst can be made in advance according to the predetermined preventing policy, so that the safety level of mine production is enhanced.