In recent decades, the pursuit of a “better” living environment has resulted in a large number of harmful chemicals, such as beverages, foods, cosmetics, detergents and so on, which contain preservatives or fungicides, eroding the human body and weakening the normal functions of cells or nerves. The development of cutting-edge science and technology will damage the earth’s environment, pollute the atmosphere, water quality and soil, and endanger our survival. One of the substances that can improve the healthy environment is “negative ions”. Tourmaline is not only portable, but also can produce negative ions. Tourmaline crystal has potential difference, which can produce permanent weak current and produce “negative ions”. Because the tourmaline will produce permanent electricity, an electric field will be formed around it. The water existing in the electric field circle will be electrolyzed to produce the same “tourmaline negative ions” (different from the “artificial negative ions” forced by artificial electrical appliances) as the natural “negative ions” in waterfalls or forests. The “tourmaline negative ions” can solve the previously mentioned problems Health problems or water quality problems. “Tourmaline anion” not only has the effect of improving health and magic power, but also has a very powerful effect.