本研究欲透過2000年及2016年兩次總統選舉中，探討在不同的成長背景、環境脈絡底下，這兩個不同世代在投票行為上有何差異並進行對照。本研究透過「政治世代」的概念將2000年和2016年時具有投票權20至29歲的年輕人劃分為兩個不同的世代，分別為「改革開放世代(G1)」以及「政黨輪替世代(G2)」，並透過「政黨認同」、「候選人評價」、「網路使用時間」以及「認同意識」四個不同的面向來測量年輕選民的「投票與否」和「投票抉擇」上有何差異。 研究結果顯示，在「改革開放世代(G1)」中，政黨支持中立者、候選人評價有差異者、有使用網路者以及認同意識一致者較傾向去投票，但在模型中都不顯著；投票抉擇部分，選民傾向投給自己認同的政黨、投給候選人評價會顯著影響選民投票抉擇、有使用網路的選民傾向投給民進黨、認同台灣意識的選民傾向投給民進黨，但只有候選人評價在模型中顯著。 在「改革開放世代(G1)」中，政黨支持中立者、候選人評價有差異者、有使用網路者以及認同意識一致者較傾向去投票，但只有候選人評價在模型中顯著；投票抉擇部分，選民傾向投給自己認同的政黨，候選人評價會顯著影響選民投票抉擇，前兩項在統計中都顯著，有使用網路的選民傾向投給民進黨、認同台灣意識的選民傾向投給民進黨，在模型中不顯著。 / This study explores the differences in voting behavior between the two different generations in different growth contexts and contexts. And dividing young people from 20 to 29 years old when 2000 and 2016 presidential elections in Taiwan. The first generation named "the generation of reform and opening up (G1)", and the second generation named "the generation of parties alternate (G2) ". And to measure the difference between "voting or not" and "voting choice" among young voters through four different approaches: "party identity", "candidate evaluation", "internet using time" and "identity awareness". The results show that, in the G1, the parties who support the neutrality and the candidates who have different evaluation have the tendency to use the Internet and agree with the consensus, but they are not significant in the model; Voters choose to vote for their own political parties, vote for the candidate evaluation will significantly affect the voter choice, there are voters tend to vote for the use of the network to the DPP, Taiwan's voters agree with the DPP tend to vote, But only candidate evaluation is significant in the model. In the G1, the parties who support the neutrality and the candidates have different opinions, and those who use the Internet and those who agree with the identity are more likely to vote, but only the candidate evaluation is significant in the model; Voters tend to vote for their own political parties, the candidate evaluation will significantly affect the voter choice, the first two are significant in the statistics, the use of the network tend to vote for the DPP voters, Taiwan-aware voters tend to vote To the DPP, in the model is not significant.