A screen film structure, comprising: a transparent screen film having a first surface and a second surface opposite to the first surface; a first release film including: a first main portion detachably adhered to the first surface of the screen film, wherein a peripheral edge of the first main portion is substantially aligned with a peripheral edge of the screen film; and a first aligning portion connected to the first main portion and protruding out of the screen film, wherein the first aligning portion has a plurality of first positioning holes; and a second release film detachably adhered to the second surface of the screen film, wherein the screen film is a soft screen film, the peripheral edge of the screen film includes two long lateral edges parallel to each other and two short lateral edges parallel to each other, the first aligning portion protrudes out of one of the two short lateral edges, the first positioning holes are staggeredly arranged in two rows, and each of the two rows of the first positioning holes is substantially perpendicular to each of the two long lateral edges, and wherein each of the first release film and the second release film is a bendable soft release film, and the second release film includes: a second main portion detachably adhered to the second surface of the screen film, wherein a peripheral edge of the second main portion is substantially aligned with the peripheral edge of the screen film; and a second aligning portion connected to the second main portion and protruding out of the screen film, wherein the second aligning portion has a plurality of second positioning holes arranged closer to an edge of the second aligning portion than to the second main portion, and the second positioning holes are respectively aligned with the first positioning holes. a transparent screen film having a first surface and a second surface opposite to the first surface; a first release film including: a first main portion detachably adhered to the first surface of the screen film, wherein a peripheral edge of the first main portion is substantially aligned with a peripheral edge of the screen film; and a first aligning portion connected to the first main portion and protruding out of the screen film, wherein the first aligning portion has a plurality of first positioning holes; and a first main portion detachably adhered to the first surface of the screen film, wherein a peripheral edge of the first main portion is substantially aligned with a peripheral edge of the screen film; and a first aligning portion connected to the first main portion and protruding out of the screen film, wherein the first aligning portion has a plurality of first positioning holes; and a second release film detachably adhered to the second surface of the screen film, a second main portion detachably adhered to the second surface of the screen film, wherein a peripheral edge of the second main portion is substantially aligned with the peripheral edge of the screen film; and a second aligning portion connected to the second main portion and protruding out of the screen film, wherein the second aligning portion has a plurality of second positioning holes arranged closer to an edge of the second aligning portion than to the second main portion, and the second positioning holes are respectively aligned with the first positioning holes.