He is married to former singles player on the Chinese national badminton team Dai Yun.

[3] He won numerous international titles in mixed doubles, the majority of them with Ge Fei.

[4] Liu won the 1997 IBF World Championships in mixed doubles, with Ge Fei, beating Jens Eriksen and Marlene Thomsen in the final.

In the next edition in 2001, Liu reached the mixed doubles quarterfinals with Cheng Jiao but lost to Michael Søgaard and Rikke Olsen.

Liu Yong competed in badminton at the 2000 Summer Olympics in mixed doubles with Ge Fei.