The invention discloses a collecting clamping jaw of flake materials. The collecting clamping jaw comprises a clamping jaw mounting plate, a clamping jaw fixed part, a clamping jaw sliding part and acollecting clamping driver. The clamping part fixed part is fixedly mounted at one end of the clamping jaw mounting plate. The clamping jaw sliding part is slidingly connected with the clamping jaw mounting plate. The collecting clamping driver is arranged on the clamping jaw mounting plate, and the power output end of the collecting clamping driver is in transmission connection with the clampingjaw sliding part, wherein the clamping jaw sliding part is driven by the collecting clamping driver to be close to or away from the clamping jaw fixed part. According to the collecting clamping jaw, through the design of a special clamping structure and a special anti-skid structure, the collecting clamping jaw has high clamping force, the phenomenon that a flexible bracket slips and loosens in the collecting process can be effectively avoided, in addition, the collecting clamping jaw is compact in structure, short in transmission journey and sensitive in clamping transmission, the collectingefficiency is greatly improved, and the collecting success rate is greatly increased.