The invention discloses a method for comprehensively evaluating concrete compression strength via impact echo-rebound. The method comprises the following steps: randomly arranging a plurality of test areas on a to-be-tested concrete member, attaching sensors to the concrete surfaces of the test areas, and applying a preset pressure to the sensor, wherein the sensors are connected with a data collection analyzer; debugging the data collection analyzer according to the concrete in the test areas, and setting collection parameters of the data collection analyzer, knocking corresponding positions of the sensors in the test areas by using an impacter; observing waveform change of a time domain curve and an amplitude spectrum, saving the amplitude spectrum in an effective band so as to obtain 16 groups of wave velocity testing results; removing three maximum values and three minimum values, and calculating the representative values of the wave velocity according to the rest ten wave velocity testing results. The testing method provided by the invention is simple, accurate and reliable in result and stable in performance and is capable of taking the inner defect conditions of the concrete into consideration.