Spokesman Dan Le Bouthillier told AFP yesterday the website www.Forces.Ca contained no sensitive information.
It was taken down by the military after the hack was discovered.
Users had been redirected to China's State Council website, www.Gov.Cn. It showed photos of Premier Li Keqiang and contained links to information about jobs, tourism and investment in China, as well as government news.
Ottawa is investigating, Le Bouthillier said.