Thomas Tuchel fears growing crowd trouble could wreck the special atmosphere at English grounds.
Chelsea’s boss spoke out after Antonio Rudiger was hit by a bottle opener and a lighter hurled from the section of Stamford Bridge housing Tottenham’s fans.
Blues defender Rudiger made it known to referee Paul Tierney but is not taking the matter further.
This incident comes at the end of a weekend in which disorder has resurfaced at Premier League grounds.
Objects were hurled by Everton fans in their defeat to Aston Villa on Saturday and there were pitch invasions at Southampton during their draw with Manchester City that evening.
Tuchel said: “If it’s a new trend we should act together to stop it as soon as possible to protect the environment of this game and the atmosphere that’s absolutely unique in England.
“I love to have the fans close to the pitch.
“Not behind fences and not behind nets. It’s a brilliant atmosphere.