Proteus vulgaris is a rod-shaped Gram-negative chemoheterotrophic bacterium. The size of individual cells varies from 0.4~0.6μm to 1.2~2.5μm. P. vulgaris has peritrichous flagella, which makes it actively motile. It inhabits soil, polluted water, raw meat, the gastrointestinal tracts of animals, and dust. The invader P. vulgaris has numerous factors including fimbriae, flagella, outer membrane proteins, lipopolysaccharide, capsule antigen, urease, immunoglobulin A protease, hemolysin, amino acid deaminase, and finally the most characteristic attribute of Proteus, the swarming growth, which allows them to colonize and survive in higher organisms (Rozalski et al. 1997 and Emody et