¡iabract¡j From the past to the present, we can find no matter mass media, public opinion, and even the government party and opposition party is in support of neutrality of the Speaker, nevertheless, it had been unable to accomplish the purpose in past decade. What we see is endless arguments, as often as there is election of the premier of legislative yuan or bill battle. Hence, the author thinks there is a gap between our subjective expectation and objective reality about neutrality of the premier of legislative yuan, otherwise why we can¡¦t put neutrality of the premier of legislative yuan into practice for a long time. So this text thinks whether the premier of legislative yuan should be development toward neutralization, it is worth to discuss. It is necessary to inspect the possibility of neutral development for the premier of legislative yuan. In this article, we define the meaning of neutrality of the Speaker includes three levels, such as neutrality of agenda, neutrality of political party and neutrality of electoral district, etc., and under the prerequisite of these three meaning, the Speaker acted multiple roles including congress chairman, legislative chief, representatives of political party, representatives of electoral district and coordinator, etc. And some of them are useful to neutrality; some of them are conflict and contradictive to neutrality. Further, these roles would be influenced by the historical background, political culture, constitutional government system, political party, electoral system, and parliamentary norm and convention. So from this point of view, we observe experience of foreign the Speaker and inspect key factor influencing role of the Speaker. At the same time, we also explored key factor influencing role of the premier of legislative yuan, and compared with both, to present useful and unfavorable conditions about neutrality. Eventually, according to these conditions, we analyze the possibility of neutral development for the premier of legislative yuan, and make the relevant suggestions. We find out something in the course of studying. At first, our government trends towards presidential government in constitutional government system, the administration and legislation is split, it is useful to strengthen orientation of representatives of political party of the premier of legislative yuan. Secondly, if the premier of legislative yuan wants to be the Speaker, he has to rely on the strength of the political party in election, it makes the premier of legislative yuan cant¡¦t keep neutrality. Finally, the establishment of legislative yuan is very short, norm and conventions that it is useful to neutrality is not formed, such as the Speaker withdrawing from the political party or setting up several vice speakers to share agenda resources. And this also makes neutral development of the premier of legislative yuan more and more difficult. So we get a clear understanding of our current institutional reality, it is unfavorable to neutrality of the premier of legislative yuan. Consequently, we should develop towards the American type of the Speaker, to strengthen authority of the premier of legislative yuan, to make him lead the political party and integrate the legislative to restrict the executive power, to improve the entity of the whole legislative yuan. Key word: the premier of legislative yuan, the Speaker , neutrality of the Speaker , neutrality of agenda , neutrality of political party , neutrality of electoral district, Constitutional government system , political party , electoral system , parliamentary norm and convention