一、调查对象选择面部发育正常,唇部无畸形,无疤痕,无炎症的正常儿童与成人。二、测量方法及标准:测量工具采用游标卡尺,计量单位定为毫米,测量标准有以下几项:A、上唇红高度:从唇峰高点到上下唇红接触线(息止(牙合)位)的垂直距离。B、下唇红高度:从下唇红缘正中点,到上下唇红接触线(息止(牙合)位)的垂直距离。 First, the respondents to choose normal facial growth, no deformity lip, no scars, no inflammation of normal children and adults. Second, the measurement methods and standards: Measuring tools using vernier calipers, units of measurement as millimeters, the measurement criteria are the following: A, the upper lip red height: from the peak of the lip to the upper lip lipstick contact line (interest only occlusion) The vertical distance. B, the lower lip red height: from the middle of the lower lip red edge, up and down the lip red line of contact (interest only occlusal) bit of the vertical distance.