With increasing of Korean family's revenue and pursuing quality of life, outdoor food and meal industry is rapidly growing up. Thus employee's service quality is much more needed in this industry. This paper is review the relationship between transformational leadership and service quality. Survey papers gathered from restaurant employee were 571 cases and analysed to test significant relationship between leadership and service quality. Statistical analysis result showed that tangibility and empathy among service quality factors have many significant relationships with leadership styles than other factors.