Abstract: The aim was to investigate the elinieal significance of blood routine examination in pets. Routine blood eheeks including quantitative measurement results （like total leukocyte count, differential leukocyte count, erythroeyte count and index and platelet count and index） and qualitative test result （like blood smear morphologie examination） are adopted so as to provide a reference for pet clinical diagnosis, observation on the therapeutic effect and prognosis of the disease.