A Dendron-jacketed linear polymer is synthesised, ethylenediamine, methacrylate, acrylamide was used in two steps reactions. As the first step, the main chain was prepared by the free radical polymerization reaction of acrylamide and methacrylate, as the second step, the Dendritic side group was introduced to the main chain by the amidation and Michael addition reaction of Ethylenediamine and methacrylate ,thus synthesis a new type Dendron-jacketed linear polymer and the product was characterized by FTIR, the optimized Synthesis conditions as below: reaction temperature 30℃, reaction time 24~48h,reactant malar ratio 1:1. The water-solubility of this product is also evaluated. The result shows that the Dendron-jacketed linear polymer has a remarkable improvement on the anchoring, anti-salts and anti-temperature properties compare to the non-jacketed linear polymer, the molecular structure design achieved the desired result.