The group will include a judge, a police official and a member of the media.
It is expected to present its report to the Quebec justice minister by next spring.
Couillard also announced it will be harder for police to obtain a court-issued warrant to monitor members of the media.
“That will elevate, I would say the threshold of difficulty to obtain a warrant for members of the media as the same level as what we have now for judges, lawyers and members of the National Assembly,” he said.
The premier said the Public Security Department will investigate procedures at the three major police forces in Quebec – the provincial police and the Montreal and Quebec City forces.
The measures come a day after it emerged Montreal police had obtained at least 24 surveillance warrants for the iPhone belonging to La Presse columnist Patrick Lagacé at the request of the special investigations unit that looks into crime within the police force.