Suzuki was born on March 28, 1985 in Toyohashi, Aichi Prefecture. She became engaged to a former classmate in June 2016. They married on February 1, 2017.
Suzuki trained in Nagoya, Japan. At the same time, she worked for Toho Real Estate, which has its own skating rink.
Suzuki won the bronze medal at the 2001–02 Junior Grand Prix Final. After having a successful junior career, Suzuki was hampered by her struggles with anorexia nervosa which began at age 18 when she left home for university. Her weight having fallen to 32 kg, she was unable to jump and missed the entire 2003–04 season. It took her a year to gain back the weight she had lost.
Suzuki returned to competitive skating in the 2004–05 season after being inspired by Shizuka Arakawa's victory at the 2004 World Championships. She began working with coach Hiroshi Nagakubo in the early 2000s.
She had a breakthrough in 2007–08, winning several events, and achieving her highest finish at Japanese nationals since 2002. She consequently received her first senior Grand Prix assignment in 2008–09, and won the silver medal at the 2008 NHK Trophy. That same season, she also won the 2008 Finlandia Trophy and finished 8th at the 2009 Four Continents Championships.
Suzuki had two Grand Prix assignments in 2009–10. She won the 2009 Cup of China and finished 5th at the 2009 Skate Canada International, qualifying her the 2009–10 Grand Prix Final. There, she won the bronze medal. Suzuki earned a place on the Japanese Olympic team after she placed second at the 2009–10 Japan Championships. She was also assigned to compete at the 2010 Four Continents Championships, where she won the silver medal. At the Olympics, she finished 8th, and was later 11th at the 2010 World Championships – her first senior Worlds.
Suzuki returned to the Finlandia Trophy in 2010, and again won the event. She was the silver medalist at both of her 2010 Grand Prix events, the 2010 Cup of Russia and the 2010 Cup of China. She qualified for her second consecutive Grand Prix Final, this time finishing fourth. A fourth-place finish at the national championships left her off the Worlds team, but she was selected to go to the 2011 Four Continents Championships, where she was 7th.
In the 2011–12 ISU Grand Prix season, Suzuki won the silver medal at the 2011 Skate Canada International and the gold medal at the 2011 NHK Trophy. Her placements qualified her for the 2011 Grand Prix Final where she won the silver medal. She won the silver behind Mao Asada at the 2011–12 Japan Championships. At the 2012 World Championships, Suzuki won the bronze medal, becoming the oldest ladies' single skater to medal at the event since Maria Butyrskaya. At the 2012 ISU World Team Trophy, she won the ladies' event, defeating World champion Carolina Kostner. Team Japan also won the event overall.
For the 2012–13 Grand Prix season, Suzuki received the same assignments as the previous season. She won the silver medal at the 2012 Skate Canada International and the 2012 NHK Trophy, qualifying her for the 2012–13 Grand Prix Final. At the final, she placed third in the short program. She fell twice in the free skating, finishing third overall. In December 2012, Suzuki said that the 2013–14 season would be her last. She finished fourth at the 2012–13 Japan Championships behind Satoko Miyahara.
Suzuki won the silver medal at the 2013 Four Continents Championships, as part of a Japanese sweep of the ladies' event with teammates Mao Asada and Kanako Murakami taking the gold and bronze medal respectively. She placed twelfth at the 2013 World Championships. At the 2013 World Team Trophy, Suzuki placed first; Team Japan placed third overall. Her free skating score of 133.02 and her combined total score of 199.58 are her personal best scores.
Suzuki began the 2013–14 season at the 2013 Finlandia Trophy, where she won the silver medal behind Yulia Lipnitskaya. She won another silver at the 2013 Skate Canada International, again behind Lipnitskaya. At the 2013 NHK Trophy, she earned the bronze medal after placing second in the short and fourth in the free skating.
Suzuki won gold at the 2013–14 Japan Championships, ahead of Kanako Murakami and Mao Asada. She placed second in the short program behind Asada, but rebounded to first place after winning the free skating. She skated two clean programs and earned the highest free skating and total score to date in the ladies' event at the Japan Figure Skating Championships.
At the 2014 Winter Olympics, Suzuki competed in the free skating portion of the figure skating team event, placing fourth in that segment; Japan finished fifth overall. She went on to place eighth in the ladies' singles competition. At the 2014 World Championships, she placed fourth in the short program with a personal best score, eighth in the free skating, and sixth overall. Following the World Championships, Suzuki announced her retirement from competitive skating.
Following her retirement in 2014, Suzuki began working as a choreographer and teaching with her longtime coach, Hiroshi Nagakubo, at the Howa Sports Land Skating Club in the Aichi Prefecture. She has choreographed for Rika Hongo, Rin Nitaya, and other young skaters. She credited figure skating choreographers Shae-Lynn Bourne and Pasquale Camerlengo for inspiring her to start working as a choreographer.
Suzuki did not compete in the 2003–04 season.
GP: Grand Prix
JGP: Junior Grand Prix
(Small medals for short program and free skating awarded only at ISU Championships. At team events, medals awarded for team results only.)^team event – This is a team event; medals are awarded for the team results only.
^T – team result
^P – personal/individual result