傳統的國家安全威脅之應處，係以確保國家軍事、政治及外交衝突等國家安全問題為目標。隨著冷戰結束後，全球化時代來臨，國際戰略環境的變遷與威脅性質的演變，「非傳統安全」威脅已逐漸取代「傳統安全」威脅。換言之，傳統安全思維僅著重在主權國家的軍事安全層面，非傳統安全則是基於整體人類安全的考量。我國在面對非傳統安全威脅下，如何調整適應環境之變化，以確保生存及發展，已成為當前刻不容緩之要務。 非傳統安全議題相當廣泛，主要包括：經濟及金融安全、自然生態環境安全、網路資訊安全、大規模殺傷性武器擴散、疫情傳播、恐怖主義、跨境犯罪、走私販毒、非法移民、海盜、洗錢等。中國大陸對臺威脅亦包含傳統與非傳統安全威脅性質。傳統安全係以軍事戰略威脅為主，非傳統安全威脅則來源多元、形式多樣，所呈現以走私、海盜、偷渡、偽造貨幣、詐欺、洗錢等跨境犯罪最為顯著， 本論文將探討兩岸共同打擊跨境犯罪背景發展，並分析兩岸交流衍生之大陸民眾非法來臺所呈現之態樣與現況，闡明我國所面臨的非傳統安全威脅，希冀由相關資料分析比較，藉此驗證現行實務面執行運作成效，並針對實務運作所面臨之困境提出研究建議，供相關單位參考，建立一個兩岸和平安全的互動環境。 / The aim of dealing with the traditional threats to national security is to ensure the national security in the aspects of military, politics and diplomacy. After the end of the Cold War comes the era of globalization, international strategic environment changes as well as the substantial of threat evolves. As a result, “non-traditional security (NTS)” threats have gradually taken the place of “traditional security” treats. In other words, the concept of traditional security only focuses on the aspects of military security of a sovereign state, whereas the consideration of non-traditional security is based on the general human safety. While confronting with threats of non-traditional security, it’s crunch time to make adjustments and adaptation so as to ensure existence and development of Taiwan. The issues of non-traditional security are extremely wide-ranging, mainly including: economic and financial security, ecological and environmental security, information and network security, the proliferation of weapons of mass destruction (WMD), the spread of epidemics, terrorism, transnational crime, narcotics and smuggling, illegal immigration, piracy, money laundering, and so on. The threats to Taiwan from China include traditional security threats and non-traditional security threats. The main threat of the traditional threats is military hostility, while non-traditional security threats stem from various sources and come out in multitudinous forms, especially in the fields of transnational crime such as smuggling, piracy, stowaways, currency counterfeiting, fraud, money laundering, etc. This study discusses the background and context of the cross-strait joint fight against transnational crime, and analyzes the current situation and patterns of illegal immigration of the people from Mainland China resulting from the cross-trait exchanges, as well as explicates the non-traditional security threats confronted by Taiwan, whereupon, in the hope of examining the practice performance by means of comparative analysis of related materials, proposed suggestions and strategies for these predicaments are finally concluded as a reference to the competent authorities to build a peaceful and secure environment for cross-strait interactions accordingly.