The administrat ion law regime in Taiwan has been bui l t to complete in the recent years , and yet the execut ion effect iveness has still caused cont rovers ies. The main reason for lacking eff iciency is simply because the a dministration authorities don't have the right of coercive disposi t ion in i ts administ rat ive invest igat io n system; And such defect has made an administration authority a toothless tiger. The writer believes that building full right in administration investigation is necessary and in addition, it shall be balanced with warrant requirement and administ rat ion investigation officer system to make sure that administration investigation system has it limits and could keep the balance between human right protection and public interests.