The invention discloses diet tea with corn stigma. The diet tea with the corn stigma is made of raw materials including, by weight, 100 parts of the corn stigma, 7-18 parts of parched semen cassiae, 5-12 parts of fructus crataegi, 1-10 parts of green tea, 1-8 parts of neroli, 0.5-8 parts of stevia rebaudiana, 1-8 parts of roses, 1-9 parts of radix ophiopogonis, 3-12 parts of peach kernel, 2-10 parts of lotus leaves and 3-12 parts of lyceum barbarum. Since the corn stigma is taken as the main raw material matching with the semen cassiae, the fructus crataegi, the green tea, the neroli, the stevia rebaudiana, the roses, the radix ophiopogonis, the peach kernel, the lotus leaves and the lyceum barbarum, the diet tea with the corn stigma has functions of diuretic and laxative therapies, reduction of blood fat and weight loss, is green and healthy, remarkable in weight loss effect without bounce if a person insists on drinking the diet tea for a long time, low in material cost, and especially suitable for purely obese people.