An approach notification device of a straddle type vehicle comprises an obstacle detection means 13 for detecting an obstacle located around a rider's own vehicle 1, an approach determination means 22 for detecting an approaching state that the obstacle is located within a predetermined distance from the own vehicle 1; and a notification means 25, 26 configured to start its operation under the condition that the winker device 14 is operated in the direction of the location of the obstacle in a condition where the approaching state is determined. The notification device may be a winker operation resistance increasing means 25 for increasing operation resistance of a winker manipulator 75. In cooperation with the operation of the winker device 14, vibrators 26 located in a steering handlebar 4L, 4R and a fuel tank 9 may be operated. The approach notification device can effectively notify a rider of an approaching state of an obstacle.