The invention discloses paper for packaging a carrier tape and a preparation method thereof. The paper and the preparation method are characterized in that the thickness of the paper for packaging the carrier tape is 0.25mm-1.00mm, the thickness deviation is plus or minus 0.02mm, the compactness is 0.80-0.95g/cm<3>, the moisture content is 6.0%-9.0%, the deflection is greater than or equal to 30mN.m, the peel strength between all the layers is greater than or equal to 80ftlb/1,000in2, the critical wax rod strength of a surface layer is greater than or equal to 18A, and the residual rate of burrs (soft flocks) greater than 0.1mm in a carrying hole punched by using a punching mould is less than 5/1000. According to the paper for packaging the carrier tape and the preparation method thereof, by utilizing short fiber paper pulp subjected to pulp grinding treatment, and adding and spraying a high-molecular polymer resin adhesive, dry-strength resin, wet-strength resin, a stiffening agent, a sizing agent and the like into the paper pulp and between made wet paper sheet layers, a three-dimensional network structure is formed by bonding paper pulp fibers with various polymer resin macromolecules, so that paper boards have relatively high interlayer bonding strength, surface strength and stiffness, and the fibers are easier to cut off during punching to reduce the production of the soft flocks, so as to meet the quality requirements for the packaging the carrier tape.