At present, UAV is common to use as a single unit, but by operating as multi-agent system, it is possible to possibly be able to carry out more sophisticated tasks. For example, it may be possible to realize long-distance transportation with heavy object which impossible by a single drone. Therefore, we propose a control method to achieve cooperative transport so that the payload follows the virtual leader. We assume the transporting problem connected payload and multiple quad-rotors with cable. In this research, we treated quad-rotor as a model regarded as a linear secondary system and used consensus algorithm to achieve the purpose. Finally we verified its usefulness by simulation.