Immediately after graduating from the Academy, Miu was offered a major role in the 1981 thriller drama The Lonely Hunter, starring alongside his classmate Felix Wong with seniors Carol Cheng and Money Chan.

From 1981 to 1986, Miu together with Tony Leung, Andy Lau, Felix Wong and Kent Tong were promoted as TVB's Five Tigers, a group of five of the most popular young actors in Hong Kong at the time.

Due to the reasons of Hong Kong's economic downturn and uncertainty over retail industry in the future, he sold his business, The Optical Centre, in 2002 to Luxottica.

Miu starred in the 2014 crime drama Line Walker as Cheuk Hoi and became a strong contender for Best Actor in 2014 TVB Anniversary Awards.

[2] In 2020, he made a guest appearance as himself in episode 997 with Michelle Yim as herself on TVB’s sitcom Come Home Love: Lo and Behold as the spokesperson and ribbon cutters.