Abstract: The author of this article, taking the first year of Shenlong of the Tang Dynasty as the starting point,makes a new investigation of Li Bai's making firs t acquaintance of Meng haoran with the conclusion that Li Bai first made acquaintance of Meng Haoran in the late spring of the fourteenth year of Kaiyuan when he wrote the poem To Meng Haoran: Returning to My Mountain Seclusion;and the next year he wrote the poem Seeing Meng Haoran off to Guangling.

Key words: Li Bai, Meng haoran, make first acquaintance, make friends