Physical properties and adhesion characteristics of blended rubber compounds composed of natural rubber(NR) and butadiene rubber(BR) were investigated. With increasing BR content, crosslinking density was increased due to the inhibition of reversion. As a result, Young’s modulus was increased, while tensile strength and elongation measured at break point was decreased due to the decrease of tear energy. High values of rubber coverage of these adhesion test samples showed that the strength of adhesion interface was relatively higher than that of rubber layer. Pullout forces decreased with increase in the BR content. A good relationship between pullout force and tensile strength of the blend is observed, indicating that pullout force is mainly dependent on the fatigue properties of the blend. Interaction between NR and BR in the blended rubber compounds for the adhesion with brass-plated steel cord was not observed.