Traders at Crawley Market say more than 700 people have signed their petition asking to be allowed to move permanently to Queens Square.
Stall holders have warned Crawley Borough Council the market will die if they are only able to trade from the High Street.
Several traders will be at the town hall this evening to put questions about the market to councillors at a meeting of the full council.
The meeting starts at 7.30pm. Members of the public are welcome to attend.