Lai entered TVB in 1983 as a clerk in the business department. In 1985, he gave up the job and trained in the TVB Acting School. He starred in a few series in 1989. He started out in some minor roles, and took on some more significant roles later on. He has left TVB and entered the movie industry. Although those films are low-cost, these years provided a variety of roles and experiences to him. He also acted in two ATV series. He has achieved much praise for his roles, especially in the TVB drama Rosy Business creating a big trend in Hong Kong in 2009.
With much praise from the public, he won Best Supporting Actor and Best Actor in 2008 and 2009 TVB Anniversary Awards respectively. Meanwhile, he won My Favourite Male Character and TVB.com Popular Artist in awarding ceremony and has become the first Best Actor winning 3 awards at the same time. In 2010, he retained the Best Actor award in TVB Anniversary Awards for his role in No Regrets and became the second actor to win consecutive Best Actor award after Gallen Lo in 1997-98.
Lai played different kinds of roles and is liked by a lot of Hong Kong viewers. He is best known for his role in Journey to the West, The Gentle Crackdown (co-star with Halina Tam), Off Pedder and Some Day (co-star with Teresa Mo), Rosy Business and No Regrets(co-star with Sheren Tang). Owing to his brilliant performances, he is regarded as a talented TV actor with high popularity.
He is married and has a son.