The tourmaline energy cup is also called "tourmaline health cup" and "nano energy cup". The tourmaline energy cup is a new type of health-care water cup with a functional area at the bottom. Functional materials are composed of tourmaline, activated carbon, volcanic rocks, germanate, activated silica, activated titanium oxide and other dozens of natural materials. Now it is extracted by nanotechnology. Natural substances in the cup can change ordinary drinking water poured into the cup into "small molecular group" weakly alkaline water within 15 minutes, and the water quality, calorific value and activity have all changed, so some people call it weakly alkaline water cup.