The utility model discloses a multifunctional quick-assembly loose leaf book for students, which is composed of a loose leaf folder and loose leaf paper. The utility model is characterized in that the loose leaf folder is a case integrating pressing bars and binding staples into integration. Gaps are left between an upper bottom plate and a hinge on a lateral plate of the case. A restoring spring is sheathed on a shaft of one of the gaps. Both left and right ends of the upper bottom plate are provided with vertical positioning tongues which are corresponding to notches on left and right lateral plates on a main body. The loose leaf paper is special loose leaves manufactured according to the types of homework of various subjects. All loose leaves are vertically arranged in turn according to the orders of various subjects each. The utility model has the advantages of reasonable structure and low cost. The utility model effectively solves the problems that school bags of students are too heavy, using paper is wasteful, and teachers have a heavy work-load of correcting homework.