When the cabinet meets on Monday, ecology and health ministers will be putting forward details for the idea, which if it were passed would apply to all drinking venues that stay open until 0200.
About 350 cafes and bars in western France have already begun field trials, Ecology Minister Jean-Louis Borloo explained.
The minister also said on France 2 television channel where he was speaking: "Health Minister Roselyne Bachelot and I will present a decree to make electronic breathalyser tests obligatory in drinking establishments open until 0200 so that everyone can check their level, their condition upon leaving."
And he added: "I hope that by this summer, it will be obligatory in all such places."
