In the earlier phase of Japanese colonial time in Taiwan, the importance of planting sidewalk trees had been noticed. It was because that, in the world of colony, planting sidewalk trees was symbolic of progress of civilization. In addition, it also served another function as showing off the achievement made by the colonial government in the international society. Therefore, investigation on sidewalk trees has been an important task for the forestry experiments. However, we can not find any subject related to the investigation of sidewalk trees in the nursery regulation of Taipei Nursery, 1989 nor Forestry research institute, 1911. Later on, in the year 1921, due to the establishment of Forestry Department of The Central Research Institute, investigation of sidewalk trees became one of the six tasks of the Forestry Department. Tashiro Antei had always been working on the Taiwan forestry experiment system therefore, the Taipei Nursery and Hen Chuen tropical plant nursery were built because of his devotion in this field. At the same time, he also devoted his time and efforts to write books concerning to the topic of Taiwan sidewalk trees. It goes without saying that, Tashiro Antei can be considered as the fundament father of Taiwan sidewalk-tree theory. Tashiro Antei arrived in Taiwan in June of 1895. On his way back to Tokyo in 1928, he passed away in Kagoshima. He had been staying in Taiwan for about 30 years. His contribution to the latter-day forestry experiment and system of trees plant is extremely important to the modem forestry its Taiwan. In this article, I'd like to introduce the theories of Tashiro Antei of latter-day sidewalk trees in order to get a glimpse of the sidewalks trees system of Taiwan in the modem world.