The leader of the Front National made the comments when she was asked about what amendments her party is preparing to make in the counter-terrorism bill, designed to replace powers under the current state of emergency.
Speaking in an interview for Le Parisien, Ms Le Pen said: “Unlike Macron, the Republicans do not believe that terrorism is a crime like any other.
“It must become the target of a dedicated fight.
“There should probably be a dedicated jurisdiction.
“Why not the equivalent of the former Cour de sûreté de l’État (State Security Court)? Since terrorism is an act of war.
The State Security Court was a special judicial body which existed from the 60s to the 80s and it included two military officers, with someone of the rank of a General working as one of the three judges.
The aim of the court was to judge crimes against national security, which included terrorism.
The state of emergency has been high in France following the attacks in Paris in November 2015, which killed more than 130 people.
Terrorism cases in France fall under the jurisdiction of the Court of Session, which is a court made up of three judges and nine jurors.
However, when they are hearing terrorism cases, the court sits with just three judges.
Ms Le Pen has used the public anger against French president Emmanuel Macron to try to garner support in France for the Front National in a bid to revitalise her party.
The 49-year-old leader said she is determined to reignite her party, which came second in the presidential elections earlier this year.
French media has reported that Ms Le Pen is being prepared by her entourage for her candidacy for the 2022 elections.
During the campaign trail earlier this year, Ms Le Pen called for foreign terror suspects to be expelled immediately and said it was a “ceaseless and merciless war” against France.
The French president has been in the Caribbean visiting the French overseas territories that have been destroyed by Hurricane Irma.
Me Le Pen said: “I reiterate my request for a commission of inquiry because, unquestionably, there was a failure of the State in this drama that could have been anticipated at the level of the needs of the population.”