Even though Qinwen Zheng has a Wikipedia article, only the details concerning her professional career have been published.

She clinched the Tennis Future Hamburg in January 2021, defeating Linda Fruhvirtova 6–2, 6–3 in the final of the ITF Circuit $25k tournament, which was staged at the Hamburger Tennis-Verband.

On June 20, 2021, she defeated Aleksandra Kruni in two sets in the $60k Macha Lake Open finale in Staré Splavy.

Further, Zheng made her WTA Tour start at the 2021 Palermo, where she also won her first match, beating Liudmila Samsonova, the second seed, in the first round.

She earned her first WTA semifinal at the 2022 Melbourne Summer Set 1 after defeating Mai Hontama, former No. 2 Vera Zvonareva, and Ana Konjuh. In the semifinals, she was defeated in straight sets by second seed Simona Halep.