Acne is a chronic inflammatory disease of the hair follicles and sebaceous glands, and is a common and frequent aesthetic (or cosmetic) disease among adolescents. Acupuncture and weight loss specialists use milli-fire to treat teenagers who come to the clinic and receive satisfactory results. Chinese medicine believes that adolescents have a vigorous vitality and a strong Yang-heat; or due to the external invasion of wind-heat, the lung meridian heat, steam up the face; or wantonly eat spicy and thick flavors, damage the spleen and stomach, and over time help Yang to generate heat, which is embedded in the skin and becomes toxic, heat and toxicity attack, overflowing in the skin and the onset of acne. (ordinary needling) in comparison, conventional needles thick 1.2-1.2mm, the thinnest 0.5mm, the clinical use of milli-fire needle diameter in 0.25-0.35mm, the same shape as the ordinary milli-needle, the main characteristics of such needles is the needle body is thin, can be painless or slightly painful into the needle; operation can be directly to the disease, often with immediate effect; milli-fire needle for acupuncture point stimulation have physical Mechanical stimulation and warm stimulation and physiological sterile burning stimulation” three in one, enhance the intensity of stimulation action time “milli-fire needle therapy, through the power of (fire) to open the meridians, set the needle method to stimulate the meridian, take the moxibustion of the warm yang to dispel damp and cold” In summary, milli-fire needle therapy and ordinary acupuncture therapy compared with the injury, stable efficacy # fast, simple operation # easy to promote, can also shorten the course of treatment, can be applied in clinical promotion It can be used in clinical practice.