At the age of 8, Tong made her first film appearance in director John Woo's action-comedy Once A Thief, which was nominated for several categories at the 11th Annual Hong Kong Film Awards. TVB then recruited Tong as a child star, and she has since then appeared in dramas such as The Greed of Man and State of Divinity.

As an adult, she took a three year break from the entertainment circle to attend a designing college. She has declined TVB's offer to personally manage her.

Before 2004, Her popular works include the popular Aqua Heroes and Square Pegs, which also starred Roger Kwok and Jessica Hsuen.

In 2004, she was invited to film CCTV's Liao Zhai along with a host of mainland China's rising stars. The show was extremely popular and spun Liao Zhai II. She also filmed Twin of Brothers, alongside with Raymond Lam, Ron Ng, Tavia Yeung and Li Qian of CCTV. Later that year, she starred in The Last Breakthrough, starring Nick Cheung, Raymond Lam and Sonija Kwok. Although The Last Breakthrough didn't receive good ratings in HK, it is still remembered and favoured by many as one of the most meaningful and touching series TVB ever made.

The modern sequel to Square Pegs, Life Made Simple was filmed with the same cast and released in 2005. At the end of its run, the series became one of the highest rated series of 2005, with Wars of In Laws, which also starred Bosco Wong in it.

Tong has been nominated for TVB's "Most Improved Actress" award consecutively. In 2004, she entered through Aqua Heroes and Square Pegs. Later in 2005, she made it to the top 10 list with both her character as Angel in Life Made Simple, and as Ha Hiu Ching in The Last Breakthrough. Bar Benders was Tong's only series broadcasted in 2006 but turned up on TVB's list of Top Five series of that year.

In 2007, two of her series, Ten Brothers and Family Link have also made it into TVB's five top rated dramas of 2007. Tong also came out of War and Destiny, which was recive with praise and critical acclaim for her performance. She was invited by CCTV to flim The Last Princess along with Sammul Chan. The show was received very well in Mainland China. In December, she released her first Mandarin Music Album named "Singing with the Moon" in Beijing.

The following year, in 2008, she filmed "The Greatness of a Hero" in TVB, starring as Shangguan Wan'er, a well known historic figure. The drama also starred Sunny Chan, Kent Cheng, Bernice Liu and Sonija Kwok. Also, she once again collabrated with Kenneth Ma in a new ancient drama, "Man In Charge", alongside with Kate Tsui. On the second time, she also filmed L For Love♥ L For Lies with Stephy Tang and Alex Fong.

Recently, it has been confirmed that she would replace Tavia's role in A Pillow Case of Mystery 2.

Filmography

TV Shows 1990 Return to the Truth
1992 The Greed of Man (大時代)
1993 Racing Peak
1996 State of Divinity
2001 Legal Entanglement (法網伊人)
2002 Forty Something
2002 Burning Flame II (烈火雄心II)
2002 Love and Again (駁命老公追老婆)
2002 Good Against Evil (點指賊賊賊捉賊)
2002 A Case of Misadventure (騎呢大狀)
2002 Take My Word For It
2002 Let's Face It (無考不成冤家)
2002 In the Realm of Fancy (繾綣仙凡間)
2002 The Legend of Love (牛郎織女)
2003 Find the Light (英雄、刀、少年)
2003 Aqua Heroes (戀愛自由式)
2003 Vigilante Force (智勇新警界)
2004 Twin of Brothers (大唐雙龍傳)
2004 The Last Breakthrough (天涯俠醫)
2004 The ICAC Investigations 2004 (廉政行動2004)
2004 Ten Brothers (十兄弟)
2005 Liao Zhai Zhi Yi
2005 Life Made Simple (阿旺新傳)
2006 Bar Bender (潮爆大狀)
2006 War and Destiny (亂世佳人)
2007 The Family Link (師奶兵團)
2007 Phoenix Rising (2007) (蘭花劫)
2007 The Last Princess (最後的格格)
2008 The Greatness of a Hero (盛世人傑) 2008 Man In Charge (幕後大老爺)
2008 A Pillow Case of Mystery 2 (施公奇案 2)

Movies 1989 Once a Thief (縱橫四海)
1996 Those Were the Days (4個32A和一個香蕉少年)
1999 The Boss Up There (生命楂Fit人)
2000 An Eye for an Eye
2001 Chinese Heroes
2001 Love is a Butterfly
2002 The Untold Story- Suddenly Vanished
2003 Tragic Room
2003 The Trouble-Makers
2004 Cop Unbowed (誓不低頭)
2005 Summer Breeze
2006 Marriage With a Fool (獨家試愛)
2007 House of the Invisibles
2007 Ghost Plot
2008 L For Love♥ L For Lies (我的最愛)