When an image processing apparatus receives an execution instruction for image processing, it performs management of information related to image processing and image data that is subjected to image processing, as historical data. When the execution instruction for the image processing is received from a user, the image processing apparatus stores image data read from a document or image data received from outside, and then stores process information related to the image processing based on the received execution instruction and the stored image data, as historical data. The image processing apparatus then performs image processing of the image data that is stored in accordance with the received execution instruction.