The present invention discloses a multifunctional slide supporting hinge. It includes a slideway, a slide block mounted in said slideway groove, a first bracket arm for fixing on the window sash, a second bracket arm whose one end is hinged on the middle portion of said first bracket arm. Besides, it also includes a third bracket arm and a fourth bracket arm which are hinged with the slide block,in the described slideway interior a spring leaf is fixedly mounted in the end portion close to the slideway, between the described spring leaft and first slide block a second slide block is mounted in the described slideway and can be slidden in the slideway, and another end of the described second bracket arm is hinged on said second slide block. Besides, said invention also provides its workingprinciple and operation method.