Guo, 29, told The Bund, a magazine based in Shanghai, a couple of days ago that she has no plan for the London Olympic Games.
"I think I have fulfilled my task, so the London Games is not what I have in mind now. The chances should be left to other young talents in the team," Guo said.
Guo's retirement marked the end of an era during which she set an almost unbeatable record of four Olympic gold medals, five consecutive victories in both the individual and synchronised 3m springboard at the FINA World Championships and 17 FINA World Cup titles.
She is not just a phenomenon on the springboard, but also an eye-catching figure off the venue with her good looks and seven-year romance with Kenneth Fok, son of Hong Kong Olympic Committee president and tycoon Timothy Tsun-Ting Fok. It has been reported that Guo will get married this year.