Potassium hydroxide is an important chemical basic material, and the prepared solution can be applied in the medical industry. In the inspection, the method of checking mold with potassium hydroxide solution can be applied. In this paper, the content of this part is briefly summarized as follows:

　　1、用灑桔棉球撩凈皮損。

　　1. Use the orange cotton ball to clean the skin.

　　2、以一枚玻璃片邊緣刮取皮權的顯著部位，翌殘屑或殘物于另一玻璃承物。

　　2. Scrape the significant part of the leather right with the edge of one glass piece, and the next debris or debris shall be placed on the other glass carrier.

　　好的取材部位是：（1）疤疹根部里面或基底處（2）趾間發軟或有分泌物的部位（3）損害的邊繳（4）拔發的基部。

　　A good place to take samples is: (1) inside or at the base of scar eruption; (2) soft or secretive place between toes; (3) damaged margin; (4) base of hair pulling.

　　3、使用10％的氫氧化鉀1滴與承物片上的殘屑或殘物混勻。

　　3. Use 1 drop of 10% potassium hydroxide to mix with the debris or debris on the bearing plate.

　　4、栓綏fm執。臺取招分澆臘（因油臘易析出結晶），使其固定。

　　4. Shuanshui FM. Take and pour wax separately (because oil wax is easy to precipitate and crystallize), and make it fixed.

　　5、用10倍和40倍鏡頭，在低照明度下進行觀氟。

　　5. Use 10x and 40x lens to observe fluorine under low illumination.

　　6、利的物員少，往往效果更好。

　　6. The benefit of fewer material staff, often better results.

　　7、它可溶解表皮蛋白，但不破壞霉菌成分時候霉菌不彌散，保持在角質層細胞膜之間。

　　7. It can dissolve the epidermal protein, but when it does not destroy the mold components, the mold does not disperse and remains between the cuticle cell membrane.