Potato virus sample detection bag and preparation method thereof

The invention belongs to the field of plant virus detection devices and specifically relates to a potato virus sample detection bag and a preparation method thereof. The detection bag is composed of two polyethylene films and a piece of 80-mesh nylon filter cloth; the 80-mesh nylon filter cloth is located between the two polyethylene films; the detection bag is of a quadrangular structure, three edges of the quadrangular structure are completely closed and one edge of the quadrangular structure is open; the open edge is used for closing one parts of the polyethylene films on the two sides and the 80-mesh nylon filter cloth, and the closed parts extend to the center of the open edge along the completely closed side by the extension length accounting for 1/3-1/2 of the total length of the open edge; the open edge comprises two closed parts, the two of which can be connected or separated by a distance. The potato virus sample detection bag has the advantages of simple structure, low price and prevention of sample cross pollution.