It is of high theoretical value and practical significance to study multi UAV cooperative path control strategy, making it support multi UAV attack on multi target coordinately, and control the UAVs to arrive the target location at the same or given time in order to maximize the operational effectiveness. The coordination strategy of multi level distributed control architecture is determined. The concepts and the corresponding expressions of coordination variable and coordination function are presented, and the communication relation between lead plane and wing planes is given. Finally, the problem of multi UAV coordinated path control with time constraint is solved by using multi level distributed coordination strategies based on coordination variable and coordination function. Simulation results verify the effectiveness of the algorithm.