中药炮制的方法很多 ,砂烫是其中之一。砂烫时需要试烫 ,尤其是对一些厚度较薄的药材 ,需经试烫以求得适中的火候温度。传统试烫法都是用药物进行的 ,必须多次投药进行试烫 ,从而会造成一些不必要的损失和浪费。针对这一问题 ,笔者利用普通油光的白纸在砂烫时颜色的变化指示火 There are many methods of Chinese medicine concoction. Sand ironing is one of them. When the sand is hot, it needs to be hot. In particular, for some thinner medicines, it needs to be burnt in order to obtain a moderate temperature. The traditional method of testing is performed by using drugs. It must be administered several times to conduct a test burn, which will cause some unnecessary losses and waste. In response to this problem, the author used a plain glossy white paper to indicate the change in color when sand was hot.