An image processing device for a vehicle includes: an acquisition unit acquiring a captured image of a periphery of a vehicle, which is captured by an imaging unit provided in the vehicle; a bird's eye view image generating unit generating a bird's eye view image in which the captured image is projected to a 3D virtual projection plane provided at a side opposite to the vehicle with reference to a ground and separated from the ground with distance from the vehicle; a guide line generating unit generating a guide line indicating a predicted course of the vehicle; a conversion unit converting the guide line into a virtual guide line indicating the predicted course on the virtual projection plane; and a superimposing unit superimposing the virtual guide line on the bird's eye view image.