Features: 1) Composition: the main ingredient of this product is a new-type of macromolecular active agent with a content of 1 - 3% 2) Properties: it is a water-soluble liquid which becomes a molecular (invisible) physical antimicrobial reticulated film after evenly spraying and solidifying 3) Antimicrobial: when the liquid preparation of this product is sprayed on skin, it will form a molecular reticulated film composed of a biological macromolecular layer and a positive charge layer after solidifying. The biological macromolecular layer is bonded to the skin with macromolecules and therefore has a long-acting antimicrobial function which can last more than 8 hours; the biological positive charge layer forms a nanometer positive charge reticulated film which has a strong static electricity to absorb the pathogenic microorganism such as bacteria, fungi, viruses with negative charge. These pathogenic microorganisms will die of suffocation due to the fact that the enzyme on which they rely for respiration and metabolism is out of action, thus it has the functions of physically killing pathogenic microorganisms and broad-spectrum antisepsis. 4) Characteristics: a) Innovation of dressing structure: an invisible dressing is formed by a biological macromolecular layer and its nanometer active group and is easy to apply on any part of the human body where the traditional dressing cannot be fixed b) Long-acting antisepsis: i) For the skin, the surface of skin will have an antimicrobial function for more than 8 hours after spraying once ii) For the article, the fabric will maintain an antimicrobial function after being washed 40 times after spraying once c) Broad-spectrum antisepsis: it can kill or inhibit viruses and other pathogenic microorganisms, such as staphylococcus auras and colibacillus that cause inflammation fungi that cause colitis mycosis; gonococcus and treponema palladium that cause venereal diseases; hepatitis B virus that causes hepatitis and coronavirus that causes SARS d) Safe antisepsis: by adopting the physical antimicrobial formula, this product is non-irritant to skin and mucous membrane, harmless to normal cell of human body and non-toxic to human body after being taken orally. It can avoid such problems as drug resistance and tolerance which are caused by the chemical antibacterial medicine 5) Indications: through inactivating and isolating bacteria (such as staphylococcus aurous, colibacillus, gonococcus, treponema palladium), fungi (such as candida albicans), viruses (such as hepatitis B virus, coronavirus), it is suitable for auxiliary treatment of inflammation infected wound caused by the above-mentioned pathogenic microorganisms and wound caused by physical, mechanical or thermodynamic factors. This product has the functions of isolating the wound, long-acting antisepsis, preventing the secondary infection and accelerating healing of the wound. It can inactivate coronavirus of SARS, and is suitable for preventing SARS JUC