采用扫描电镜研究在３０个氢氟酸（ＨＦ酸）浓度－时间点下陶瓷蚀刻表面和断面形貌特征，并测定表面孔隙率和断面蚀刻深度。结果表明：蚀刻深度随浓度和时间递增有增加趋势，但ＨＦ酸浓度在５．０％以上，蚀刻时间７．５ｍｉｎ以上，蚀刻深度变化不明显；孔隙率与ＨＦ酸浓度一时间呈正相关关系。并首次提出机加工瓷蚀刻形貌的四级分类标准 The surface and cross-sectional morphology of the ceramic under 30 hydrofluoric acid (HF) concentration-time points were studied by scanning electron microscopy. The surface porosity and the depth of cross-section etching were also measured. The results show that the etching depth increases with the increase of concentration and time, but the HF acid concentration is above 5.0% and the etching time is above 7.5 min, the etching depth does not change obviously. The porosity and HF acid concentration have a positive correlation. For the first time, the four-level classification standard of machined porcelain etching morphology was proposed