The main role of roasted red light is to promote cell synthesis of proteins and genetic material, accelerate the repair and healing of damaged cells, and enhance the vitality of cells, and roasted red light can be used in the treatment of many diseases. In the treatment of traumatic injuries, the main role of roasted red light is to reduce inflammation, relieve pain, and promote wound healing. It also activates the regeneration of damaged nerve fibers and helps the recovery of limb function. In the treatment of gynecological inflammation, roasted red light has the effect of killing bacteria breeding in the vagina, such as mold and trichomonas, which can treat gynecological inflammation such as vulvar itching and cervical erosion. Roasted red light can also enhance the bactericidal function of white blood cells and treat infections of other tissues and organs such as periarthritis of the shoulder, nail infection, and skin soft tissue infection. Roasted red light is a kind of physical therapy that is widely used for the treatment of many diseases because of its role in promoting wound healing and enhancing the bactericidal function.