The future of a controversial Queensland mega-mine has suffered another setback with project funding from China looking increasingly unlikely.

The Greens have heralded the end of the project after a second Chinese bank ruled out providing any funding for the Adani Carmichael coal mine in Queensland's Galilee Basin.

Anti-Adani coal mine protesters during the recent Queensland election.. Credit:AAP

"Any financier with any sense doesn't want Adani," Greens senator Andrew Bartlett told reporters in Canberra on Monday.

"It's time for Adani to give it up, save their money and for the politicians of Queensland to focus on the issues that will deliver genuine jobs for regional Queensland."