Although both bacteria and viruses belong to microorganisms, they are very different things, viruses are a class of individuals tiny, no complete cell structure. Bacteria are generally single-celled, simple cell structure, specifically from the cell and virus size, structure, reproduction, laboratory indicators, treatment methods are different, analysis is as follows: 1, the size of different: bacteria and viruses according to the type of different, the specific size will be different, but bacteria are generally in microns, can be seen with an ordinary optical microscope, and viruses are smaller, usually in nanometers or millimeters The unit is usually in nanometers or milli-microns, and must be observed with an electron microscope; 2, the structure is different: bacteria belong to a single-celled organism, which has a complete including cell wall, cell membrane, cytoplasm and nucleoplasm. In contrast, viruses have a simple structure, no cell structure, mainly composed of internal nucleic acid (DNA or RNA) and external protein shell, can not survive independently, must be parasitic in living cells; 3, reproduction is different: mainly through asexual bifurcation way reproduction, that is, the bacteria grow to a certain period, gradually formed in the middle of the cell cross-section, from a mother cell split into two equal-sized daughter cells. Virus reproduction is also known as self-replication is to replicate the way at the molecular level for self-enhancement; 4, different laboratory indicators: after being infected by bacteria or viruses, the characteristics of blood routine are different, if the white blood cell count is elevated, mainly neutrophil elevation, consider the bacterial infection. If the white blood cell count is normal or decreasing, accompanied by an increase in lymphocyte count, it is considered a viral infection; 5, the treatment is different: after being infected by bacteria or viruses, anti-bacterial drugs and anti-viral drugs cannot be cross-used with each other. Bactericidal or antibacterial activity drugs. Viral infections need to be treated with antiviral drugs, including nucleoside analogues such as entecavir, transcriptase inhibitors such as efavirenz, neuraminidase inhibitors such as oseltamivir, and inhibitors of DNA polypeptidases such as ganciclovir, which work mainly by affecting a part of the viral replication cycle.