Our company produces special asphalt modification of styrene-butadiene latex (SBR) is butadiene and styrene in the anionic emulsifier and non-ionic emulsifier under the action of low-temperature cold polymerisation of copolymer emulsion, containing 26% of the bonded styrene, is a kind of slightly blue luster with a creamy white aqueous dispersion. As a modifier of asphalt emulsion, this latex has a greater value of popularisation and application in highway maintenance, which can significantly improve the road performance such as low-temperature elongation ability, high-temperature stability and creep characteristics, and aging resistance of the matrix asphalt. The latex in the presence of stabilizers and asphalt emulsion is easy to disperse uniformly, can increase the bonding of thin slurry sealing mixture, can significantly improve the low-temperature performance of the mixture, can effectively prevent low-temperature cracking of road asphalt; the latex also has a significant improvement in asphalt high-temperature performance characteristics. The latex for modified asphalt waterproofing coatings, emulsified asphalt and latex and good stability, as modified asphalt waterproofing roll-roofing can be used as latex evaporation mixing method to modify, this method ensures that the asphalt and rubber is in the most uniform mixing state, greatly improving the modification effect. The latex can significantly improve the softening point of modified bitumen membrane products, low-temperature flexibility has improved significantly.