Featured are a system and a method for alarming a front impact danger coupled with a driver viewing direction and a vehicle Such a system includes: a driver viewing direction recognition unit recognizing a driver viewing direction an obstacle sensing unit sensing obstacles existing in directions that a driver does not view and an engine control unit. The engine control unit receives and analyzes the driver face direction data from the driver viewing direction recognition unit to identify the driver viewing direction when the vehicle enters in the crossroads, requests the obstacle sensing unit perform obstacle sensing for another direction than the drivers viewing direction and analyzes analyze an obstacle sensing result. Such methods advantageously warns a driver to the presence of obstacles when a vehicle enters in crossroads to prevent a traffic accident.