Starting on Friday, restaurants will be allowed to extend dine-in services until 10 p.m., instead of the current 9 p.m. rule, Chan said.
Gyms, massage parlors, some sports grounds and playgrounds will also be allowed to reopen from Friday.
However, the current ban on gatherings of more than two people will remain in place for another week, she added.
The city clamped down with harsh new restrictions in late July amid a third wave of infections, peaking at 149 cases on July 30.
On Tuesday, Hong Kong reported nine locally transmitted Covid-19 cases, the Centre for Health Protection announced.