An analysis system of the present invention includes: an analysis process executing means for controlling operation of the analysis system configured by a plurality of analysis engines to execute an analysis process; and an input quality regulating means for determining quality characteristics of processing target data inputted into the respective analysis engines so as to satisfy a preset requirement for accuracy of an analysis result, and regulating the quality characteristic of the processing target data inputted into a given analysis engine configuring the analysis system based on the determined quality characteristics.