The invention discloses an intelligent robot route planning method. The intelligent robot route planning method comprises steps of (1) dividing an operation space into a plurality of n-meter*m-meter rectangle virtual zones, (2) controlling the intelligent robot to transverse every virtual zone in an H-shaped movement, (3) constructing a grid map with distance information, angle information, collision information and obstacle information in a H-shaped movement of the intelligent robot, and marking a passing point, an obstacle point and a collision point, (3) realizing a map in real time, determining whether a whole operation space finishes traversing, if yes, entering the step (4), if no, returning to the step (2), and (4) controlling the intelligent robot to perform one time of an along-the-border behavior and marking the along-the-border behavior points on the constructed map. The intelligent robot route planning method can construct an effective grid map with errors in a controllable range according to the distance information, angle information, collision information and obstacle information of the robot behavior and realizes a low cost and efficient robot route planning.