After her parents' divorce when she was eight years old, she immigrated with her mother and brother to British Columbia, Canada in 1990.

Feeling uncomfortable in a new environment, Kwan had stated that she had engaged in smoking, underage drinking, and skipped school when she was twelve years old.

[5] She returned to Hong Kong hoping to pursue a career in singing, eventually landing a 10-year deal with BMA Records.

Kwan did not officially debut until 2002, stating that for three years she did not have jobs, instead spent time learning music theory and how to play the tenor sax and violin.

"[6] She made her debut with the Mandarin single "Ruined Your Lover" 亂了情人 and followed with Cantonese release "Can't Stand For It" 負擔不起, both well received by radio stations.

[8] Subsequently, all artistes under BMA Records management were banned from appearing on TVB programmes, which at the time was considered an important medium.

Jade made a public apology, stating, "I am a TVB contract artiste, perhaps the company [BMA Records] was negligent...

[11] Kwan signed with Stars Shine International in 2010 and returned to the charts with the single "Starting Over", a Cantonese version of Liu Liyang's "Present".

A second single, "Try Love Personally" was released to critical success, with Kwan being praised for her vocal ability.

With Stars Shine International failing to obtain a date for a Hong Kong Coliseum concert for Kwan, she decided not to renew her contract after it ended in 2011.

[15] On September 30, 2012, Kwan was named as one of the recipients of the 2012 Ten Outstanding Young Persons Selection, becoming the fifth Hong Kong female singer to receive the award.

I just don't plan on releasing more albums and decided not to play this game of award shows.

On April 22, a press conference was held, revealing the singer to be Kwan, along with producer Carl Wong and lyricist Chan Wing Him.

[23] Kwan released "Bank of Life" 人生銀行; the single reached number one on Metro Radio and JSG.

She released the single "Smile" (lyrics and music by Cousin Fung and James Ng) on July 31, 2016, to commemorate the birth of her daughter.

The Touching Moment Concert tour kicked off on July 13 at the Zhongshan Memorial Hall in Guangzhou, China.

[30] Kwan headlined benefit concert Shining as Star "妍"亮生命音樂佈道會 at the Queen Elizabeth Stadium from September 10–12, 2009, fundraising for Christian Zheng Sheng College, a school for helping young drug offenders.