Background : Bitter gourd (Momordica charantia) is a vegetable with pantropical distribution and contains the active ingredient, such as momordicine and charantin. Moreover, bitter gourd has been reported to exhibit antidiabetic, anticancer, cardiovascular-protective and antioxidant effects. But, the distinctive bitter taste of bitter gourd was not suitable for food preference. This study was conducted to evaluate the improvement effects of bitter taste of bitter gourd with natural fermentation and roasting process. Methods and Results : Bitter gourd fruits were obtained from Headeulnyeokae Co., Ltd.(Gang-Jin 59253, Repubilc Korea). Fruits of bitter gourd were prepared by natural fermentation process for 4h at 25℃. After natural fermentation, the fruits were dried in hot-air dryer for 15h at 49-55℃. The dried fruits were roasted in 500 g batches at 120℃ for 10 min in the electric rotisserie oven. After roasting, fruit pieces were extracted with hot water and cold water. One of them was cool-type, and the other was hot-type bitter gourd tea. In the sensory evaluation, hot tea and cold tea showed the high scores on color, flavor and overall acceptability. Conclusion : These mean that roasted bitter gourd had less bitter, and it could be utilized widely as drink and food material.