The invention relates to the production technical field of flexible circuit boards. A processing device for a flexible circuit board comprises a frame, a feeding device, a feeding platform assembly, aglue sticking device, a glue pressing device and a cutting device, wherein the feeding device, the feeding platform assembly, the glue sticking device and the glue pressing device are installed on the frame, the feeding device is connected with the feeding platform assembly, and the glue pressing device corresponds to the position of the feeding platform assembly, and the glue pressing device, the glue sticking device, the glue pressing device and the cutting device are connected in turn. The processing device of the flexible circuit board has the advantages of automatically completing the wire feeding, the glue paper feeding, the glue paper pasting, the glue paper cutting, the glue paper detecting, the pressing and cutting, and achieves high processing efficiency.