Salt mineral stone can release some negative ions, and at the same time it has the function of sterilization. At the same time, the salt crystals it emits refract light, which can relieve the pressure of the human body and make the body feel relaxed. It has natural effects of purifying air and regulating body and mind. It is a natural source of negative ions, which can volatilize negative ions called "air vitamins" and improve indoor air quality. It can naturally regulate and inhibit the radiation of harmful electromagnetic waves and regulate people's physical and mental health. It has good anti-inflammatory and bactericidal effects. Commonly used spar lamps can accelerate the recovery of burn patients and asthma patients, relieve pains such as colds, headaches, allergies and nasal sensitivities, reduce the incidence of severe asthma, reduce colds and colds, and enhance human immunity. It has the power of purification and wakefulness, and its color and light wave can regulate people's body and mind, calm their mood, relax their body and mind, increase their memory, refresh their minds, relieve stress and improve the quality of sleep. Can be used in steaming room, stone bath, health pavilion, salt therapy room, pedicure pavilion, SPA, resort and so on.