慢性支气管炎是一种普通而常见的呼吸道疾病,但至今对它的病因、发病机制、治疗办法,尚未满意解决。我们在防治工作中,利用二硝基氯苯皮肤试验(下称DNCB皮肤试验)鉴测其机体免疫水平,结果发现69.09％患者有不同程度的免疫功能低下。为此,我们试用左旋咪唑治疗,以图提高机体免疫功能,现将观察结果报导如下: Chronic bronchitis is a common and common respiratory disease, but its etiology, pathogenesis and treatment have so far not been satisfactorily resolved. In the prevention and treatment work, we used dinitrochlorobenzene skin test (hereinafter referred to as DNCB skin test) to detect its immunity, and found that 69.09% patients had different degrees of immune dysfunction. To this end, we try levamisole treatment in order to enhance the body’s immune function, the observations are reported as follows: