The present invention relates to a timing error information managing system. This system comprises a timing error information file, a circuit information file, a correlating section for establishing a correlation between each of timing errors in the timing error information file and each of circuit configurations in the circuit information file, and for adding a circuit information pointer to the timing error information file and further for adding an error information pointer to the circuit information file, and a managing section for managing information on timing errors through the use of the circuit information pointer and the error information pointer. This configuration allows high-efficiency management of the timing error in formation, thereby achieving the speed-up of various kinds of processing using timing error information.