The invention relates to a polyester-based label tape. The thickness of the polyester-based label tape is 0.100-0.150 mm. The preparation method of the polyester-based label tape comprises the steps of yarn pre-preparation, base cloth yarn treatment, weaving, shaping, immersion cleaning, drying, alcohol solvent coating, two-section baking and slitting. The specification of base cloth yarns is (60-120) D, the density of warp yarns is (70-150) pieces/cm, the density of weft yarns is (30-60) pieces/cm, and the base cloth yarns are treated by spraying 1-20wt% of a pre-preparation and 0.2-0.8 wt% of an antistatic agent mixed slurry and drying at 105-120 DEG C for 1-3 minutes; after the woven fabric is shaped, carrying out immersion cleaning by adopting a weak base mixed solution, and drying at 110-150 DEG C for 2-10 minutes; coating with a 10-30 wt% alcohol-based solvent compounded by multiple solvents, then carrying out gradient baking, carrying out first-stage baking at 80-120 DEG C for 5-10 min, raising the temperature to 180-200 DEG C, and carrying out second-stage baking for 1-3 min; and after drying and forming, slitting to obtain the terylene-based label tape. The polyester-based label tape alcohol solvent can be coated, and is anti-static, flame-retardant, washable and good in printing effect.