  We present a new massive spin two field theory which has smooth massless
limit based on BRS formalism. Our model contains a parameter a which extendes
Fierz-Pauli's mass term. Although redundant scalar ghost exists in our model,
physical degree of freedom is still five for the sake of existence of the
Deser-Waldron type gauge symmetry. Origin of vDVZ discontiunity can be studied
at the Fierz-Pauli limit a -> 1.
