Dory Zakhour’s side had lost 3-1 to hosts Uzbekistan in the tournament opener on Sunday but made a strong start to this game as Hassan Chaito scored two goals in quick succession from the 10th minute.
Wang Chih Sheng pulled one back for Chinese Taipei a minute later but Hayssam Atwi restored Lebanon’s two-goal advantage in the 13th minute.
Kassem Kawsan grabbed another for Lebanon in the 21st minute before scoring a second four minutes later and Atwi made it 6-1 in the 30th minute.
But substitute Fang Ching Jen led a fight back for Chinese Taipei, scoring in the 34th minute before grabbing a further two in the next four minutes.
However, Lebanon defended well from then on to maintain their two-goal advantage to the final whistle.
Current Group A leaders Indonesia take on Uzbekistan later on Monday.