Supported by the National Natural Science Foundation of China(40676016 ,40876010);the National Key Project for Basics Research (2003CB415101-03 ,2004CB418304);the Key Project of the Chinese Academy of Sciences (KZCX3-SW-221);in part by E-Insitutes of Shanghai Municipal Education Commission(N.E03004)
In this paper,a class of turning point problem of nonlinear equation is considered. The lo-cation of turning point and the asymptotic behavior of shock solution are studied.