The present invention provides a travel control device capable of performing deceleration control even when detecting the entrance of a curve immediately ahead of one's own vehicle by using map matching in a navigation system. The travel control device comprises a map matching detecting part using the map matching in the navigation system for detecting the travel position of the owned vehicle on a map to be displaced onto a road where the owned vehicle is predicted traveling, a position determining part for determining whether the travel position of the owned vehicle after displaced is a position or not where deceleration control is performed on the front curve when the map matching detecting part detects the travel position of the owned vehicle to be displaced onto the road, a correctingpart for prolonging an end position of deceleration control carried by a deceleration control means to a prescribed position in the curve when the positional determining part determines that it is the position where the deceleration control is performed.