The incident occurred on Wednesday, according to Le Point news site.
Police sources that the man brandished the knife and tried to force his way through the security controls to get on the Eurostar. Police were able to overpower him and immediately arrest him.
Police then found a second knife on his body, Le Point reported.
The man is currently being held in police custody and will appear in court on Friday afternoon.
He had allegedly already been arrested in December of last year after trying to board a Eurostar with a knuckleduster, and was admitted by police to a psychiatric hospital following this incident.
Paris is on high alert after last year's terror attacks and security has been stepped up at transport hubs like Gare du Nord.