To provide a technique searching for a recommended route in accordance with a search condition, in route search performing replacement with a learning route.

The route search device includes: a storage means storing a traveled route of a section deviated from a recommended route, as a learned route; a setting means setting the search condition of the recommended route; a recommended route search means searching for a recommended route on the basis of the search condition; an applying means selecting a learned route, applicable to the searched recommended route from the storage means and applying it to the recommended route; and a display means displaying the recommended route to which the learned route is applied. The storage means stores the type information of the learned route together with the learned route, and the applying means selects the learned route having the type information in accordance with the search condition from the storage means.