The physical properties of rubber compounds and adhesion characteristics with brass-plated steel cord were investigated with the loadings of resin promoters. Resorcinol formaldehyde resin(RFR) as methylene acceptor was loaded from 0 to 4 phr, and hexamethoxymethylmelamine(HMMM) as methylene donor from 0 to 5 phr. With loading RFR and HMMM on rubber compounds, cure rate and maximum torque were decreased. The modulus of the rubber compound with low loading(2 phr) of RFR was slightly high, but the modulus was low for high loading(3 phr) of RFR additives. Tensile strength and elongation at break were varied with the loading amount and the ratio of resin promoters. The changes in the physical properties with resin additives were responsible for the formation of viscous resin layer at adequate addition, but lubricant and dilution effects at excessive loading. Adhesion properties of unaged adhesion samples containing RFR and HMMM were poor, but those after humidity aging treatment were enhanced. But the adhesion properties were poor at the rubber compound of inappropriate ratio and excessive loading of resin promoters. The high viscous resin layer formed for RFR and HMMM might suppress water diffusion to the adhesion interface during humidity aging, resulting in the slow rate of adhesion degradation of rubber compound containing resin promoters. The change in the cure rate was large with HMMM addition comparing to RFR, whereas the effect of RFR addition on the adhesion properties and the physical properties was relatively large due to its high molecular weight and viscosity.