The ploybutadiene elastomer was prepared under room temperature (25℃) from liquid polybutadiene rubber (LPB) which was adhesive, benzene-1,4-dicarbohy-droximoyl dichloride which was synthesized and trimethylamine via 1,3-dipolar cycloaddition，to seek the best curing ratio. The structure of benzene-1,4-dicarbohy-droximoyl dichloride was con?rmed by FTIR,1H NMR, MS and melting point. The structure of the polybutadiene elastomer was characterized by FTIRT. The mechanical property of the elastomer was determined by tensile strength, elongation at break and shore hardness. The surface property of the elastomer was con?rmed by contact angle and FSEM. The results indicates that the yield of benzene-1,4-dicarbohy-droximoyl dichloride is 94%. LPB was cured under room temperature after adding trimethylamine. When the mass ratio of the curing agent to LPB was 10%, the mechanical property of the elastomer was best. The tensile strength of the elastomer reaches 0.35MPa, with 53% elongation at break and 0.66KPa modulus. And the contact angle reaches 112.76皐hich shows excellent hydrophobic performance. Room temperature curing made up for the deficiency of traditional curing technology, greatly improving the heat resistance and mechanical properties of the elastomer.