Taiwan Second Division Football League (sometimes called Taiwan Football Challenge League) (Chinese: 台灣企業甲級升降足球聯賽; pinyin: Táiwān Qǐyè Jiǎ Jí Shēngjiàng Zúqiú Liánsài) is the second-ranked division in the Taiwanese football league run by Chinese Taipei Football Association (CTFA).
The Taiwan Football Second Division League's schedule usually runs from July to November, after the initial qualifiers where new entries play own tournament, with top 2 playing last 2 from previous Challenge League season.
It currently contains 8 teams that compete in a double leg round-robin tournament, each composed of seven games.
After the 14-game schedule is completed, the top team wins the league title and an automatic berth in the following year's Taiwan Football Premier League .
The league has implemented a promotion and relegation system.