Terpene resin SORT series is a thermoplastic linear polymer made of selected turpentine oil as the base material. After refining, the monomers were selected and blended, polymerization was carried out with Friedel-Crafts as the catalyst, and hydrolysis, washing, filtration and distillation were carried out. Suitable for the preparation of EVA, SIS, SBS hot melt adhesive and other adhesives which require general initial viscosity and high cohesion strength.