Organic metal sulfide compound and its preparation method and use

The invention provides an organic metal sulfide compound. The organic metal sulfide compound has a structure shown in the following description or a compound composed of repetitive units shown in the following description, wherein M represents Zn or Cu, R represents C2-C10 alkyl, C2-C10 alkenyl, straight chain or branched chain C6-C12 aryl, alicyclic hydrocarbon group, C3-C10 alkyl of which carbon atom is replaced by O, N or S, or C3-C10 alicyclic hydrocarbon group of which carbon atom is replaced by O, N or S. The organic metal sulfide compound has zinc content of 20-30% and effectively reduces sulfuration activator product weight so that tyre product weight is reduced. Tyre weight reduction reduces oil consumption, improves automobile acceleration performances, reduces a brake distance, improves turning flexibility, improves tyre uniformity, improves tyre high speed performances and control stability and realizes energy saving and emission reduction.