Application of trans-1,4-polydiene composite rubber in rubber products

The invention discloses a use of a trans-1,4-polydiene composite rubber, and an application formula of the trans-1,4-polydiene composite rubber. The composite rubber is composed of 10-80% by mass of trans-1,4-polyisoprene and 20-90% by mass of a trans-1,4-butadiene-isoprene copolymer, and the copolymer is composed of 0.1-99.9mol% of a butadiene unit and 0.1-99.9mol% by mole of an isoprene unit. The substitution of natural rubber and/or styrene-butadiene rubber and/or butadiene rubber in a tire surface rubber by 5-30 parts of the composite rubber obviously improves the wear resistance of a tire and reduces the rolling resistance. The substitution of natural rubber and/or butadiene rubber in the sidewall rubber of the tire by 5-50 parts of the composite rubber obviously improves the crack increasing resistance of the tire, reduces the rolling resistance and heat generation, and makes the good traction performance of the tire be maintained, so the composite rubber is especially suitable for dynamic use rubber products comprising tires, damping materials and the like, especially tire surface rubber of all-steel radial tires or high duty tires.