The governing body and 36 teams voted on Wednesday for stricter stadium checks, a crackdown on flares and smoke bombs, and a limit on tickets for away fans.
Recent matches such as the Ruhr derby between Borussia Dortmund and Schalke, and Hannover's DFB-Pokal cash with Dynamo Dresden, were marred by violence, and DFL president Reinhard Rauball believes the game will benefit from the measure.
"Professional football is coming out as a winner today," he told reporters.
"All 16 points were accepted with a wide majority."
The proposed changes have been met with widespread protests across Germany, but the 65-year-old is confident that they will not dilute the stadium-going experience.
"This is not a decision against fans but a decision in favour of football and its future," he added.