Liu Yongxi was born in Xinjiang on June 24, 1993.

She graduated from Shanghai Theater Academy and acted as an actress in Mainland China.

On March 5, 2020, Liu Yong Xi and her past co-star, Leo Li (Moonshine and Valentine) officially announced their love affair that had been going on since the recording of the 2018 drama, Moonshine, and Valentine. On March 17, Leo Li proposed, a month later the two married.