With a long time operating experience in the healthy fast food industry, the business of Sian Sushi has built up a strong brand image among the healthy fast food industry. The product offering in the business including various sushi and set meals, and each person in the business has a deep sense of organisational value and mission in committing to providing the food with high quality and superior customer service. The aim of the research refers to identify the competitive advantages of Sian Sush in the healthy fast food industry and several areas are related to the research aim including PESTEL Analysis, Porter’s Five Forces Analysis, Value Chain Analysis and VRIO analysis. A combination of qualitative and quantitative analysis has been used. The target market of the Sian Sushi has been identified, as well as the perception and satisfactory level of customers towards a series of specific aspects of the Sian Sushi has been gained, also the particular thoughts from interview participants regarding the research aim can be figured out clearly.