Tsui graduated from the University of California, Davis with a major in . She is also skilled in different styles of dancing such as and ballet. Tsui can speak several languages. During college, she in Japan.
After her studies in Japan, she entered the Miss Hong Kong 2004 pageant. She took the winner's crown along with Miss Photogenic award, Fitness award and Miss International Goodwill. Taking 4 titles is rare, and in the history of Miss Hong Kong, only Shirley Yeung has taken more.
After participating in TVB events and hosting some shows, she entered the Miss Chinese International 2005 pageant. Despite being a favorite for the crown, she only obtained one award and got placed in the top 5, losing to Leanne Li and Fala Chen.
Being an actress
Not long after being crowned as Miss Hong Kong 2004, Kate Tsui became romantically linked to singer Leon Lai when she interviewed him in the entertainment show "Jade Starbiz."
In 2006, Kate was heavily criticized by the public for speaking of sex openly on an RTHK radio show held in Hong Kong. Such over talk of sex shocked the public and was considered as impairing the well-established fame of Miss Hong Kong Pageant. Kate later apologized to TVB.
Miss Hong Kong 2004:
Winner, Miss Photogenic, Miss International Goodwill, and Fitness award.
Miss Chinese International 2005:
Top 5 finalist and Miss Gorgeous.
TVB 40th Anniversary Awards 2007
Winner Most Improved Actress Award
27th Hong Kong Film Award
Winner Best Newcomer Award
*When Rules Turn Loose
*La Femme Desperado
*The Price of Greed
*The Brink Of Law
*On The First Beat
*Speech of Silence
*Man in Charge
*Beauty High Resolution
* ''Lady Cop & Papa Crook''