The league included two divisions. Division A consisted of six teams, and the remaining teams participated in Division B. The last-placed team in Division A would be relegated to Division B while the champion of Division B would move up to Division A.
New league regulations required each team to be named after the administrative division in which they were located. Each team also needed two-thirds of its players to reside in the area for at least one month.
Qualifications
Taipei City Tatung, Tainan County, and Kaohsiung Taipower automatically qualified for Division A after finishing in the top four places in the 2008 season. The remaining three Division A places were decided via a qualification tournament, which took place at the Pailing Sport Park January 1–4, 2009. There were six teams competing in the tournament: Miaoli County, Kaohsiung City, Kaohsiung City Yoedy (高市耀迪),[1] Yilan County, Taipei County Hanchuang (北縣悍創), and Tainan City. Taipei County Hanchuang, Kaohsiung City Yaoti, and Kaohsiung City qualified for Division A after finishing in the top 3 places in the qualification tournament.
Taipei County Sanchung football team consists of students and graduates of National San Chung Senior High School. Most of them are still high-school students, therefore they have the lowest average age among all participating teams.