The accurate year of completion is unknown but it is estimated that the collection had been completed by the mid-11th century at the latest based on the facts that two poems from "Zokihoshishu" were included in "Gengen shu" (a personal collection of poetry by Noin) that was completed during Eien and Kantoku era (987-1048); ten poems were selected in "GoShui wakashu" compiled and presented to the Emperor in 1086.
正式な成立年代は未詳であるが、永延～寛徳年間（987年～1048年）に成立した『玄々集』（能因撰・私撰集）に『増基法師集』中の歌が2首収められ、また応徳3年（1086年）撰進の『後拾遺和歌集』には同じく10首入集していることなどから、遅くとも11世紀中頃には成立していたのではないかと考えられる。