The Small and Medium-Enterprise (SME) is vital support of economical growth in Taiwan. However, due to China economical abruptly growth, Taiwanese SME facing rigid competition. Therefore, this book will focus on the relationship between HRM practices, business performance and the moderating effects of leadership behavior, HR Multiple-Role on the relationship between HRM practices and business performance. The data was gathered from 1000 Taiwanese SME. The respondents of this study are 124 respondents are valuable. The results of this book summarized as follows: (1) Combining seven HRM practices which have significant influence business performance.(2) Both supportive and participative leader