The invention discloses a route editing method, a device and a control device. The method includes: acquiring a position of a newly added first corner point (S601); determining a second corner point (S602) from the various corner points in the initial region according to the positions of the various corner points and the position of the first corner point; using the first corner point and the second corner point as end points to form a line segment to be analyzed; and froming a boundary line segment formed by two corner points in the initial region, whether there is a second corner point is determined that relationship between the segments to be analyzed satisfies the intersection condition (S603); if not, inserting the first corner point between the second corner point and the third corner point to form a new boundary line segment, and determining the line segment including the target area of the corner (S604); and planning a cruise route in the target area (S605). The method realizesthe function of dynamic editing of the flight route, satisfies the route editing needs of the user for the area cruise, improves the route editing efficiency, and meets the automation and intelligence requirements of the user for polygon route editing.