A drug administration device, which applies a voltage between electrodes so as to percutaneously administer a drug, determines a sharing administration rate so that an administration rate of the set drug is shared and realized between the drug administration device and another drug administration device, and transmits the administration rate shared with the other drug administration device, to the other drug administration device. When the drug administration device receives the administration rate from the other drug administration device and one device between the drug administration device and the other drug administration device can no longer maintain the determined administration rate, the drug administration device changes the administration rate of the other device so as to compensate for an insufficient administration rate.
