“…Matsumura-Nishihara [23] and Goodman [6] first studied the stability of viscous shock wave under a zero mass condition. Since then, there have been a large of literatures on this topic and various approaches and techniques like weighted characteristics, approximate Green functions and pointwise estiamtes are developed, see [14,15,16,18,19,12,26,9,24,20,21,27,28] and references therein. It is noted that most of above works require the strength of shock wave is suitably small, that is, the shock is weak.…”