Watermelons is popular fruit of Thai people for three reasons. First of all, watermelon can be easily purchased. it is cheap. If you want to buy watermelons, at the market are sold all year round. Because it has grown every season, and grown in every region of the country. Second, Watermelons are eaten easy. Watermelon can be eaten fresh or juice. and some people prefer to make salad. Watermelon juice can be made into wine. Third, Watermelons are beneficial to the body. it is a source of vitamin C and A, Beta-Carotene and Citruline. Watermelon with red flesh is a significant source of lycopene, it may have antihypertensive effects and has low-calorie, so it is perfect to help lose weight. This is the reason that watermelon is a popular Thai people.