In 2009, Lau was selected to the Hong Kong U-16 squad which participated in the 2010 AFC U-16 Championship qualification tournament in China from 19 September to 2 October 2009. On March 28, 2013, he was called up to the Hong Kong U-20 squad and will participate in the 2013 National Games of China football preliminaries from April 2 to April 11, 2013 in Shanghai.