本文以2000至2021年間的焦點團體及深入訪談等質性資料，分析台灣民眾對於「台灣人」、「中國人」及「都是（雙重認同）」的定義與意涵，以釐清民眾認同的標的及界限。分析的結果顯示：台灣民眾的認同內容，持續且集中在以台灣為中心的我群意識；與中國的原生聯繫雖然持續存在，但大多僅被視為客觀事實，無法產生或轉換為我群的認同意識；變化較大的是大中國意識的認同內容，已幾乎完全消失在民眾的論述中。從認同界限的觀點而言，本文的資料明確顯示許多台灣民眾己經將台灣／中華民國視為我群、中國／中華人民共和國視為他群，此種認同意識的產生，也標示著認同界限的變化，是台灣認同進入「國家認同」階段的佐證。而國家認同意識的逐漸清晰與升高，也讓台灣認同隱然有形成集體認同的傾向。

This paper employs qualitative data collected through focus group and in-depth interviews during the period of 2000-2021. The proposed research aims to explore how Taiwanese people define and interpret “Taiwanese”, “Chinese” and “both Taiwanese and Chinese (dual identities)”, and also to clarify people’s identity target and boundary. The result shows that Taiwanese people’s identity contents are continuous and concentrated in the Taiwan- centered “we group” consciousness. The primordialist ties with China persists, yet most of them are regarded as objective facts and cannot be generated or converted into the “we group” consciousness. The major change is that the Chinese consciousness has almost disappeared from popular discourse. Our data also shows that many Taiwanese people have treated Taiwan (Republic of China) as the “we group”, and China (People’s Republic of China) as the “they group”. This finding indicates that Taiwan identity has reached the stage of national identity in terms of boundary setting. The gradual clarity and elevationed consciousness of national identity impliesy that Taiwan has the tendency of reaching a collective identity.