The object of an embodiment is to provide an error correcting method that executes an error correction of a register file without lowering the processing speed of a CPU in an information processing apparatus. An error correcting method of an embodiment is an error correcting method in which a register provided in a computing element holds data and check data and corrects an error generated in thedata. The error correcting method is characterized by including a detection step for detecting an error of the data by using the check data by the computing element, and a correction step for correcting the error detected in the data by using correction data different from the check data by the computing element.