Silica/EUG nanocomposites were prepared with different silica filling amounts ( 10 ~ 50 phr) by different mixing processes, and the properties of vulcanizing adhesive were studied. The three preparation methods were dry mixing without adding silane coupling agent, dry mixing, and wet mixing. In wet mixing process, EUG solution was firstly mixed with SiO₂ suspension modified with double-(γ-(triethoxysilane) propyl) tetrasulfide in petroleum ether and co-condensed. Wet mixing and modification of silane coupling agent make SiO₂ particles evenly distributed in EUG, to improve the interface bonding between SiO₂ and EUG, the corresponding vulcanized rubber has higher physical properties. Compared with dry mixing without silane coupling agent, the compound prepared by dry mixing with silane coupling agent has better static and dynamic mechanical properties, lower heat generation properties and better wear resistance. This method has the advantages of reducing dust pollution, environmental protection and high efficiency, and has shown wide application potential in the preparation of rubber composite materials with excellent comprehensive properties.