The article presents analysis of modern techniques of laboratory diagnostic of rickettsiosis of spotted tick-bite fever group. Owing to drastic shortage of list of produced preparations and increasing of specter of detected types of rickettsia in Russia the new approaches to laboratory verification of diagnoses are needed. To detect antibodies to rickettsia of spotted tick-bite fever group can be recommended such techniques as reaction of indirect immune fluorescence and immune enzyme assay with antigens of corresponding types of rickettsia. The most acceptable techniques for detecting and identifying rickettsia of spotted tick-bite fever group are polymerase chain reaction restricting analysis and polymerase chain reaction sequence analysis. The biological methods of analysis are needed to study pathogenic types of rickettsia.