Immunofluorescent technique with slide solid phase antiboby was used for the detection of Coxiella burnetii. The experimental conditions and the specificity of this new technique were compared with those of the conventional immunoiluorescent technique. Both techniques were used to examine the specimens of infected Orni-thodoros moubada and the results were also compared. It was found that when the new technique was used to detect C. burnetii, the non-specific fraction of the fluorescence in the specimen was significantly decreased and the sensitivity to the extracellular antigen was not affected.