泰灣 - 泰國快速服務餐廳 / The main objective of this study is to make a business plan that outlining the necessary measures taken to create ThaiOne, a Thai quick service restaurant in Taipei, Taiwan R.O.C of which the first restaurant location is in Neihu Technology park. It aims to provide authentic, delicious and healthy Thai food with the convenience of fast-food with rapid response time. In the study, global and local market information was acquired from available sources to determine the future growth of global food industry and food industry in Taiwan in general. Interviews with potential customers and site visits were also conducted in Neihu business area with the aim to find out consumer behaviour and expectations on the new food outlet or restaurant in the area. Financial analysis such as net present value, sensitivity and break-even analysis were conducted to determine if the project is worth investing or not and what is major risk of the project. The result of the study show positive net present value of the proposed business. However sensitivity analysis reveals that sale volume is the major factor that could affect the business cash flow and success of the investment.