The invention relates to a Roll up Banner with simple, convenient and fast assembly. The Roll up Banner is characterized in that the Roll up Banner is composed of a base, a spring paint scroll, a left side cover and a right side cover, both ends of the base are sealed by the left side cover and the right side cover, the spring paint scroll is arranged in the base, the left side cover and the right side cover have the same structure and opposite directions and are composed of shells, annular reinforcing ribs, clamping plates and positioning columns, each annular reinforcing rib is arranged in the corresponding shell, each clamping plate is arranged on the lower portion of the interior of the corresponding shell, between each shell and the corresponding clamping plate, an assembly gap is formed in the outer side, a base assembly groove is formed in the inner side, the positioning columns are distributed on the inner circumferences of the base assembly grooves to form an assembly gap with each shell and the corresponding clamping plate, and the shells, the annular reinforcing ribs, the clamping plates and the positioning columns are integrated and made by plastic through once compression. According to the Roll up Banner, the structural design is scientific and reasonable, the Roll up Banner has the advantages of easy production, low cost, fast assembly speed, high efficiency, less requested time and labor, high aesthetic feeling, large locking force and high intensity and has high creativity.