Antigen detection reagents, usually referred to as neocoronavirus antigen detection reagents, are usually non-toxic, but the presence of a variety of chemical components in antigen detection reagents that maintain acidity and alkalinity should be taken into account as they should not be taken orally. The buffer in the antigen test kit is used to dissolve the sample in the sampler and is usually not for direct contact with the human body and direct oral ingestion is prohibited. The main components of this buffer is to maintain the acidic and alkaline substances, such as glycine, sodium chloride, deionized water, etc., and the human skin surface in contact with the human body after timely rinsing and wiping the human body usually has no effect, but we need to pay attention to can not be taken orally, to avoid contact with the mucous membranes, once the contact occurs, it should be promptly rinsed out, and those who take it by mistake need to go to the hospital to be examined. Antigen detection reagents are recommended to read the instructions carefully before use, do not misuse the reagents in the kit, causing discomfort.