A novel coronavirus has been identified as the causative agent of the severe acute respiratory syndrome(SARS). For all the SARS-CoV associated proteins derivatedfrom the SARS-CoV genome, the physiochemical propertiessuch as the molecular weight, isoelectric point and extinction coefficient of each protein were calculated. Thetransmembrane segments and subcellular localization(SubLocation) prediction and conserved protein motifssearch against database were employed to analyze thefunction of SARS-CoV proteins. Also, the homology protein sequence alignment and evolutionary distance matrixcalculation between SARS-CoV associated proteins and the corresponding proteins of other coronaviruses wereemployed to identify the classification and phylogeneticrelationship between SARS-CoV and other coronaviruses.The results showed that SARS-CoV is a novel coronavirus which is different from any of the three previously knowngroups of coronviruses, but it is closer to BoCoV and MHV than to other coronaviruses. This study is in aid ofexperimental determination of SARS-CoV proteomics andthe development of antiviral vaccine. A novel coronavirus has been identified as the causative agent of the severe acute respiratory syndrome (SARS). For all the SARS-CoV associated proteins derivated from the SARS-CoV genome, the physiochemical propertiessuch as the molecular weight, isoelectric point and extinction coefficient of each The transmembrane segments and subcellular localization (SubLocation) prediction and conserved protein motifssearch against database were employed to analyze the function of SARS-CoV proteins. Also, the homology protein sequence alignment and evolutionary distance matrixcalculation between SARS-CoV associated proteins and the corresponding proteins of other coronaviruses wereemployed to identify the classification and phylogenetic relationship between SARS-CoV and other coronaviruses. The results showed that SARS-CoV is a novel coronavirus which is different from any of the three previously knowgroups of coronviruses, but it is closer to BoCoV and MHV than to other corona viruses. This study is in aid of experimental determination of SARS-CoV proteomics and the development of antiviral vaccine.