Background: Reference to the role of cockroaches in transporting and distributing of various disease agents in remedial and hospital environment. Objective: The present study aimed to study the fauna of bacteria and fungi associated with the digestive system of Blattela germanica L. collected from various locations at end of fall in Mashhad. Methods: 50 German cockroaches were captured from 5 locations in hospital. After dissection of digestive system under sterile condition, the extractions were incubated in suitable medium. Bacteria and fungi were identified by clinic of microbiology of Imam Reza hospital of Mashhad. Results: All cockroaches were found to contain at least one of disease agents. The most prevalent bacteria in hospital were Enterococcus spp. (78%) and Entrobacter aerogenes (50%). The fauna of bacteria in hospital consisted of Enterococcus spp., Staphylococcus epidermidis or Staphylococcus saprophyticus, Staphylococcus aureus, Streptococcus spp. and Escherichia coli Klebsiella spp., Pseudomonas aeruginosa and Gram positive bacilli. This study was done from 5 parts of hospital consisted of laboratory, kitchen, scald, surgery and ear, throat and nose. The results included that Scald part (56%) respectively and surgery part (42%) showed the most and the least pollution. From hospital, 8 were found to contain fungi (16%). The results included that Penicillium spp. (50%) respectively and Aspergillus spp. (12.5%) showed the most and the least outbreak among fungi. Discussion: The results suggested that to reduce the risk of transmission of various disease agents. Conclusions: Suitable control should be applied to manage the population of cockroaches in various locations.

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