Fuente: WIPO "hemp" The invention is applicable to the technical field of China hemp fiber bleaching, and provides an intelligent China hemp fiber bleaching device which comprises a bleaching box and further comprises a transverse frame, an elastic telescopic cylinder, a guide sleeve, a guide roller, a supporting roller, a lifting plate, a telescopic cylinder and a transmission rod. The plurality of elastic telescopic cylinders synchronously contract towards the middle; when the telescopic cylinders drive the lifting plate to descend, the multiple elastic telescopic cylinders synchronously expand towards the two sides under the limiting effect of the strip-shaped holes on the transmission rods. And in the lifting movement process of the lifting plate, the buffer lifting assembly is used for extracting the bleaching agent in the bleaching box and conveying the bleaching agent to the hose in a buffer manner, and after the bleaching agent is conveyed through the transmission rod, the bleaching agent is finally sprayed out through the spray head and acts on the fiber materials. Through stable and dynamic S-shaped conveying of fiber materials and an intelligent buffer spraying mechanism, the bleaching efficiency and quality are remarkably improved.