Although the vote of introducing casino to Matsu had passed, casino's construction had been idle due to its relevant regulations had not been passed. Therefore, Lienchiang County decided to develop transportation and tourism first and the fever of building casinos had receded. However, many tourists decided to came to Matsu to witness the scenery of the post-battlefield ruins. Some were attracted by the relaxed local atmosphere. After all, tourists often got to expose to multiple senses of enjoyment such as the North Sea Tunnel Road, the Standing Cliff, the mythical bird called Black-billed and End-crested tern, and etc. Matsu had also been classified as one of the national scenic regions. There is another unique and romantic item by Matsu's shore, the "Blue Tear", which is one of the most popular topics among Matsu's government and residents. CNN had also listed Matsu's "Blue Tear" as one of the top fifteen wonders in the world. This research adopts the formal Delphi method and the Analytic Hierarchy Process (AHP) method to explore the key factors affecting the development of tourism in Matsu. Based on relevant literatures and experts' recommendations, I have divided my researches into four major categories, "transportation", "food and lodging", "sightseeing resource", and "tour guides and facilities". Transportation covers topics including Taiwan-Matsu's air transportation, Taiwan-Matsu's maritime transport, inter-island transportation, and China-Matsu's trades. Food and lodging covers topics including hotels and restaurants, boarding houses, and local specialty food. Sightseeing resource covers topics including post-battlefield scenery, traditional architecture, religious culture, and eco-geological landscapes. Tour guides and facilities covers topics including tour guides' interpretive skills, tour guides' knowledge base, tour guides' hospitality, and tour facilities, total of 15 topics. After conducting interviews with twenty four experts specialized in industry and education field, the weights of the main hierarchy were determined to be: transportation → sightseeing resource → food and lodging → tour guides and facilities; the overall comparison of the topics mentioned was as followed: 1. Taiwan-Matsu's air transportation, 2. Taiwan-Matsu's maritime transportation. In conclusion, the research proposed the relevant suggestions.