The invention discloses a folder capable of fixing a sign pen. The folder comprises a folder main body (1), and the folder main body (1) is provided with a clamp (2). The folder is characterized in that the folded part of the folder main body (1) is connected with a spring rope (4) through a rivet (3), the spring rope (4) is connected with the sign pen (5), the folded part of the folder main body (1) is connected with at least two buckles (6) through buckle bases (7), and the buckles (6) are elastic semi-annular plastic sheets. The folder is simple in structure and convenient to use, reduces cost, is long in service life and improves working efficiency.