The invention provides a halogen-free flame retardant hot-melt adhesive film used on a high-frequency transmission wire rod. The halogen-free flame retardant hot-melt adhesive film comprises an insulating thin film layer and an adhesive layer, and is characterized in that the adhesive layer comprises the following raw materials in percentages by weight: 43% to 64% of saturated polyester resin A with the softening point of 85 to 95 DEG C, 5% to 10% of saturated polyester resin B with the softening point of 105 to 120 DEG C, 25% to 30% of a halogen-free flame retardant agent A, 5% to 10% of a halogen-free flame retardant B, 0.2% to 2% of isocyanate and 0.8% to 5% of a filler. According to the halogen-free flame retardant hot-melt adhesive film provided by the invention, self adhesion can berealized at the temperature of 100 to 130 DEG C, and the adhesive film is stabler in structure and simple and convenient to process and has good halogen-free flame retardant insulation and high-temperature resistance.