A medicine administration device that applies a voltage between electrodes and transdermally administers a medicine has been divided to realize the administration speed of the set medicine shared between the medicine administration device and another medicine administration device The administration speed is determined, and the administration speed shared by the other medicine administration apparatus is transmitted to the other medicine administration apparatus. When the medicine administration device receives the administration rate from another medicine administration device and it becomes impossible to maintain the administration rate decided in one of the medicine administration device and one of the other medicine administration devices, Change the administration rate of the other device to compensate.電極間に電圧を印加し、経皮的に薬剤を投与する薬剤投与装置は、設定された薬剤の投与速度を当該薬剤投与装置と他の薬剤投与装置で分担して実現するための分担された投与速度を決定し、該他の薬剤投与装置で分担する投与速度を該他の薬剤投与装置へ送信する。薬剤投与装置は、他の薬剤投与装置から投与速度を受信し、薬剤投与装置と他の薬剤投与装置の一方の装置において決定された投与速度を維持できなくなった場合に、投与速度の不足分を補うように他方の装置の投与速度を変更する。
