The principles and methods of lignin reinforced emulsion styrene-butadiene rubber have been elaborated. The principles include reaction of rubber grafted lignin

aromatic hydrogen bond formation of lignin and rubber and chelate formation of lignin and metal ions. The methods include mixing process

co-precipitation process etc. Then the research progresses and application are summarized at home and abroad. The results show that the mechanical properties of rubber were well improved by lignin added

such as hardness of rubber

tensile strength

elongation at break

modulus at 300%

tear strength

thermal aging resistance and so on. At last the preparation of lignin were put forward.