To easily check error information and input material information, to improve the efficiency of input data preparation job of input material, and to reduce the cost of the input data preparation job.

An input material management system is provided with an image data input device for reading the described information of input material as image data, an image registration device for imparting the same identification information as the identification information of numerical/character data in each input material to the image data of each input material, preparing an input material image file in which the identification information is used as a retrieval key and storing the prepared input material image file in an input material image database, an electronic document preparing processor for converting the numerical/character data transferred from a data processor into image data and storing the image data in an error document image database as an error document image file, and an image coupling processor for coupling the image data of the error document image file read from the error document image database and the image data of the input material image file read from the input material image database.