A new path planning algorithm of Agriculture Vehicle based on the virtual ridges is proposed in this paper. A virtual ridge is determined by the width of a real ridge and the operating width of the Agriculture Vehicle to make the Agriculture Vehicle operate effectively. First, the algorithm divides a rectangular plot into some basic units, and makes a complete and exclusive path plan in the basic unit. Then, the path planning algorithm in the basic unit is extended to the entire rectangular plot. The algorithm is proved to be effective in path planning and convenient for the Agriculture Vehicle headland turning.