There are two functions of Civil Service of Protection and Training Commission, the characteristic of Civil Service of Protection & Training Commission is quasi-judicial and administrative policy-making. Under the situation of party take-turns and administration neutral, the study of Civil Service of Protection and Training Commission will become quite important. The focus of this study will be divided into five parts of this paper: The first part, discussing the nature and goal of civil service training system, promoting the ability of civil service and organization performance. The second part, talking about the comparison of the legal system and empiricism in the primary democracy nations. The third part, talking about the organization and limits of powers of Civil Service of Protection & Training Commission. The fourth part, discussing the training system and operation of Civil Service of Protection & Training Commission. The fifth part, from the legal system and empiricism of west democracy nations, appraising the function of Civil Service of Protection & I Training Commission in R.O.C.