Abstract: The present invention discloses a polymetallocarbosilane from organic metal catalysed polymerization and uses thereof, said polymetallocarbosilane has a structural formula as shown in (I). In the formula, R is methyl, ethyl, propyl, ethenyl, chloromethyl, phenyl or phenethyl; M is Ti, Zr or Hf; m is an integer equal to or greater than 1, n is an integer equal to or greater than 0, and Cp1 and Cp2 are each a cyclopentadienyl or substituted cyclopentadienyl group. The present invention adopts a method for producing polymetallocarbosilane by metallocene catalysed addition polymerization of an organosilane, with adjustability of metal content in polymer, simple reaction steps, mild reaction conditions and low preparation costs.