The invention provides a connecting control form of a perpendicular cut stirrer. Through being matched with an excavator hydraulic system, an oil way is separated out of the excavator hydraulic systemto provide power for the perpendicular cut stirrer, electromagnetic directional valves and changeover switches are added to change the stirring direction, and the excavator bucket connecting positionis utilized to be connected with the perpendicular cut stirrer, so that the perpendicular cut stirrer is simple in connection, convenient to maintain and high in construction efficiency.