  In the present paper, it is shown that the large amplitude viscous shock wave
is nonlinearly stable for isentropic Navier-Stokes equations, in which the
pressure could be general and includes $\gamma$-law, and the viscosity
coefficient is a smooth function of density. The strength of shock wave could
be arbitrarily large. The proof is given by introducing a new variable, which
can formulate the original system into a new one, and the elementary energy
method introduced in Matsumura-Nishihara [On the stability of travelling wave
solutions of a one-dimensional model system for compressible viscous gas. Japan
J. Appl. Math. 2 (1985), no. 1, 17-25.].
