The invention belongs to the field of chemical industry, and relates to a rubber composition containing a silane coupling agent and a preparation method of rubber .The rubber composition is prepared from bis[3-(triethoxysilyl)propyl]-tetrasulfide, calcium carbonate, naphthenic oil, sulphur, nano-silicon dioxide powder, styrene butadiene rubber emulsion, clay and graphene .The preparation method comprises the following steps of flocculating, wherein bis[3-(triethoxysilyl)propyl]-tetrasulfide and the naphthenic oil are mixed to be uniform in proportion, ultraphonic treatment is conducted, the clay is added, ultraphonic treatment is continuously conducted, the nano-silicon dioxide powder and the styrene butadiene rubber emulsion are added and mixed to be uniform, heating is conducted, a flocculating agent is added, the materials are stirred to be uniform, and standing is conducted; drying; mixing, wherein calcium carbonate and graphene are added into flocculated rubber matter, and mixing is conducted to obtain a rubber compound; vulcanizing, wherein sulphur is added, heating is conducted for a crosslinking vulcanization reaction, and the rubber is obtained .Accordingly, the abrasion resistance of the rubber is enhanced, and the properties such as the tensile strength and the tearing strength of the rubber are also greatly improved.