The so-called fumigation is a technical measure to kill pests, germs or other harmful organisms by using fumigants and other compounds in closed places. Fumigating agent refers to a chemical agent that can produce gas concentration to kill harmful organisms at required temperature and pressure. This kind of molecular gas can penetrate into the fumigated substance, and it is very easy to spread out after fumigation.

Fumigation generally adopts chemical preparation method.

Methyl bromide is usually used as a chemical agent, and its general name is methyl bromide. The chemical preparation method requires the outdoor temperature to be above 10℃, and when the outdoor temperature is below 10℃, the heat treatment method must be adopted.

Fumigation of traditional Chinese medicine: Crocus sativus, Radix et Rhizoma Rhei, Olibanum, Oletum Trogopterori, etc. 10 are extracted by a special process, and then made into a special patch, which is atomized and activated into molecular particles by a special directional drug osmometer, and then driven by the eddy current power of local activator to penetrate into the deep part of the body and reach the affected area.