药材的真伪和质量的好坏 ,直接关系到治疗的效果和人民的健康与安全。现将我们在临床工作中 ,对四组容易混淆的中药饮片的外观鉴别经验分述如下 :１桃仁与杏仁的区别１ １桃仁 :扁长卵形 ,一端尖 ,中部膨大 ,另端钝圆稍偏斜 ,边缘较薄 ;长１～１ ６ｃｍ ,宽０ ８～１ｃｍ ,厚０ The authenticity and quality of medicinal materials are directly related to the effectiveness of treatment and the health and safety of the people. Now we are in the clinical work, the appearance of the four groups of easily confused Chinese Herbal Pieces differentiated experience as follows: 1 The difference between peach kernel and almond 1 1 peach kernel: Oblate oval, one end, middle swelling, the other obtuse slightly round Deflection, thin edge; length 1～16cm, width 0 8～1cm, thickness 0