The regulations signed by President Bronislaw Komorowski significantly extend prison terms and raise fines for breaches of law during large-scale gatherings. President's press office said on Thursday that the regulations were signed earlier in the week.
Beverages sold during Euro 2012 matches in and around the stadiums can contain no more than 3.5 percent of alcohol. Rowdy fans can be tried in a summary procedure at the stadium, via a TV link to a court.
Breaches would be fined no less than 2,000 zlotys ($600) or even time in prison.
Poland will co-host the championship with Ukraine.