This is very beneficial. It uses the warmth and massage of sand to strengthen the body, prevent diseases and treat diseases. When doing sand bath, sufficient ultraviolet rays play a phototherapy role; Hot fine sand is a good material for hyperthermia and has physical therapy effect; Hot sand rubs the skin and has the effect of massage. Through this comprehensive effect, we can expand the peripheral blood vessels of the whole body, promote blood circulation, accelerate metabolism, activate the reticuloendothelial system and strengthen the activation of nervous system functions. Therefore, sand bath is of great significance to health preservation. Sand bath has special effects on some diseases. Such as various types of arthritis, chronic low back pain, sciatica, periarthritis of shoulder, thromboangiitis, etc. , can be treated with sand bath. Sand bath is beneficial to the absorption of exudate, inflammation and scar softening, and can also enhance gastrointestinal peristalsis, so it can cause local and systemic changes in the body. Some scholars also believe that the reason why sand bath can cure diseases is that the sun-dried sand can make heat penetrate into joints and internal organs of the whole body and "suck" cold and damp out of the body, thus achieving the purpose of expelling wind, removing dampness and enhancing physical strength. Practice has proved that the curative effect of sand bath therapy on some diseases has obviously exceeded that of simple drug treatment and indoor physical therapy.