The invention discloses a path planning method and device and a terminal. The path planning method comprises the following steps: receiving a path planning request carrying a target start point and atarget end point, and obtaining a target planning path according to the path planning request; determining path key points on the target planning path and heading direction corresponding to the path key points; determining key landmarks corresponding to the path key points; obtaining description information of the key landmarks; and according to the path key points, the heading direction corresponding to the path key points and the description information of the key landmarks, generating a path planning result. The method makes the path planning result more concrete; and a user can determine the path key points through the description information of the key landmarks, and the path key points are not easy to miss, so that user experience effect is good.