1. Preparation method of lotus leaf tea for heatstroke prevention and cooling: Tear half a lotus leaf into pieces, put it in water with talc, Atractylodes macrocephala each 10g, and licorice 6 g, boil for about 20 minutes, remove residues to get juice, add a small amount of white sugar, stir evenly, and drink after cooling, which can prevent heatstroke and cool down.

2. Preparation method of slimming lotus leaf tea: Taking dried and crushed lotus leaves as raw materials, slimming capsules are extracted by a series of methods such as cellulase pretreatment, dilute hydrochloric acid extraction, ultrasonic-assisted extraction, chloroform extraction, etc., and mixed with water for drinking. Not only is the weight loss effect remarkable, but also there is no need to go on a diet deliberately, and there is no side effect on the human body. Usually used for weight loss treatment of obese patients.