The invention discloses an NOR-FLASH data storage method, a computer device and a storage medium. The NOR-FLASH is divided into a control region and a user region, and the method comprises the following steps of applying for writing the sector data into an idle mapping sector from the user region according to a dirty bitmap; updating the dirty bitmap, a recovery bitmap and a dynamic mapping table;writing the mapping relation between a logical sector number and a mapping sector number into a log area, wherein if the log area is full before writing, the dynamic mapping table is backed up to thestatic mapping table, and the log area is erased. According to the NOR-FLASH data storage method, the computer device and the storage medium provided by the invention, by setting the dirty bitmap, the recovery bitmap and the dynamic mapping table, the sector of the NOR-FLASH is planned and managed, the limited abrasion uniformity of the sector in the NOR-FLASH is realized, and the service life ofthe NOR-FLASH can be prolonged; by setting the log records to record the data writing process and utilizing the static mapping table to back up the data of the dynamic mapping table, the data cannotbe lost when power failure occurs during data writing.