The monopoly system applied to opium, tobacco (refer to the section of Songshan Tobacco Factory established by Taiwan Sotoku-fu Monopoly Bureau), camphor, alcohol, salt and weights and measurement, and the monopoly policy contributed to an increase of the revenue as well as the realization of self sufficiency in Taiwan by preventing excessive competition in the field of each item and controlling the imports of these items.
専売制度の対象となったのは阿片、タバコ（参照台湾総督府専売局松山煙草工場）、樟脳、アルコール、塩及び度量衡であり、専売政策は総督府の歳入の増大以外に、これらの産業の過当競争を防ぎ、また対象品目の輸入規制を行うことで台湾内部での自給自足を実現した。