The purpose of this study is to explore with the change of litigation risk in Taiwan, whether the industry specialist auditor firm/individual auditor affect earning quality. Research samples are collected from Taiwanese public trading firms between 2001 to 2010. This paper divides this period into three stages by the litigation risk, and use discretionary accruals as proxies for earning quality to examine the relation between industry specialist and discretionary accruals. The empirical results show that, clients of industry specialists have lower discretionary accruals than clients of non-specialists. However, the litigation risk is divided into three periods, this study do not find empirical support for that, when the litigation risk is higher, clients of industry specialists have lower discretionary accruals than clients of non-specialists.