Abstract: A system for generating an autonomous driving path using harsh environment information of an high definition map, includes: a search extension determination unit including a data storage unit for storing data having high definition map data and autonomous vehicle information as data used for autonomous driving, and a search extension module that performs network search extension processing in the direction of tracking a road with a low search cost and avoiding harsh environment conditions; a search information generation unit for generating search extension information according to the performance of the search extension module; and a search result generation unit configured to generate an autonomous driving path based on the search extension information.