Samihun(四未軒) Jang Bokchoo(張福樞 ; 1815~1900) was a Neoconfucian who represented Youngnam province at the end of the Joseon dynasty. He was not only learned in the Neoconfucianism, but also believed earnestly in the words of the wise and exerted himself to practice those words. He cultivated lots of men who wanted to be taught from him in his life. This article addressed characteristics, which disciples of Jang Bokchoo had, and their activities through old documents dealing with them. And this paper is predicated on studying about the mixed state of registration of the disciples by contrasting the xylographic books about them. This would form the basis of my point in this paper. Then, based on the study, this paper would reveal a scale of followers of Jang Bokchoo and features their activities had. Also, we will see in this article how the disciples, affected from Jang Bokchoo, survived the period of a reform and what kind of meaningful works they made, so we can find social level and characteristics of Samihun doctrinal faction. Documents about disciples of Jang Bokchoo were published in collections of works third time, being complemented each time, from now on. According to 『Samihunsunsangjunjip(四未軒先生全集)』, archive about pupils of Jang Bokchoo, in 1972, 428 disciples were under his instruction. Records in 『Samihunjip(四未軒集)』, 1985, said there were 682 people. And in 『Samihunjunseo(四未軒全書)』, 2006, it was concluded that there were 747 pupils. Through assuming disciples`s residences, they resided in Chilgok, Indong, Sungju, where they were close to the place Jang Bokchoo lived, were 287 in total and they formed 38% of whole followers. Also, there were many disciples dwelled at Keochang, Habcheon, Changlyong in Southwestern districts and Keumlyuong, Sunsan in Northern districts. In conclusion, absorption force of Jang Bokchoo was concentrated on Sungju area. When it comes to family name, people who had surname Jang of Indong district, which is same as Jang Bokchoo`s, were 133 in total and they carried weight among the whole disciples, forming 18%. We have to consider that the number of them were naturally overlapped that of Hanju(寒洲) Lee Jinsang(李震相) and this, also, can be one of the features. In this article, I addressed that there were two patterns in the disciple`s activities. The one was the patriot who strongly resisted to the power of foreign countries like Jang Sukyoung and Song Joonpil. And the other one were the scholars in retirement who lived in seclusion, kept their loyalty, being conservative, like Jang Seungtaek and Jo Keungsub. This two groups had different patterns in coping with the tide, but both were possible choices for disciples being worried about the reality of Josedn dynasty.