The Crown says the charge against Stefanie Trudeau stems from an arrest in October 2012 that started with a man drinking beer outdoors.
The arrest became highly publicized after a video of it went viral and was widely shown in the media.
Video and audio recordings pointed to a forceful, profanity-laced arrest of a friend of the man who was accused of drinking.
Trudeau's badge number of 728 was first seen during a student protest earlier in 2012 when a video showed an officer liberally pepper-spraying demonstrators.
The Crown decided there was not enough evidence to lay charges in that incident.
Trudeau's arraignment is scheduled for May 6.