A member of China's perennial world champion Uber Cup teams, in the biggest events for individual players (such as the BWF World Championships, the All-England Championships, and the Olympic Games) Wei and her partners have usually been overshadowed by China's two dominant women's doubles pairs, Gao Ling and Huang Sui, and Yang Wei and Zhang Jiewen.

One exception came at the 2007 All-Englands where Wei Yili and Zhang Yawen defeated both of these teams to capture the highly coveted title.

Her other women's doubles titles include the China (2001), Singapore (2001, 2007), Denmark (2002, 2004), Thailand (2003), Indonesia (2006), and French (2007) Opens.

[3] At the 2008 Beijing Olympics Wei and Zhang Yawen were beaten in the semifinals by yet another Chinese pair, Du Jing and Yu Yang, who went on to win the gold medal.

Wei and Zhang earned a bronze medal by defeating Japan's Miyuki Maeda and Satoko Suetsuna in the playoff for third place.