Whether watermelon is weight loss or fattening depends mainly on how to eat watermelon. If it is before or after meals to increase the intake of additional watermelon, eating watermelon is fattening. Because watermelon contains a certain amount of calories, if the additional increase in watermelon intake after meals, equivalent to more calorie intake, so it will gain weight. If you eat watermelon while reducing the equivalent amount of staple food into the amount, this time watermelon is able to lose weight. Because the sugar content of watermelon is 8%-15%, in the case of the same amount of staple food intake, the calorie content of watermelon is less than the calorie content of rice, noodles, buns, etc. The part between the rind and the flesh of the watermelon is called the watermelon cui yi, which can be eaten as a diuretic, thus reducing the body’s calories, and thus eating watermelon is possible to lose weight.