In this study, 10 WOX genes were identified from pepper by using the whole genome data of pepper and were named as CaWOX1, CaWOX2, CaWOX3, ... , CaWOX10 according to their distribution order on the chromosomes. The physical and chemical properties, chromosome location, evolutionary relationship with tomato, protein conserved motif, tissue expression level and expression level under high and low temperature stress were analyzed. The results showed that the physical and chemical properties of each member were quite different. The lengths of amino acids encoded by the 10 genes were 127-318 aa, the relative molecular masses of the proteins were 14 740-36 070, the open reading frame lengths were 384-957 bp, and the theoretical isoelectric points of the proteins were 5.66-10.01. The distribution on the chromosome were more uniform, mainly localizing at the both ends of the chromosome. Phylogenetic tree analysis showed that the WOX gene could be divided into three branches: modern, middle and ancient, which was consistent with the evolutionary development of tomato. Protein conserved motifs showed that except for CaWOX3, the proteins contained Motif1 and Motif2, which were always closely linked. Tissue expression level analysis showed that most members were not expressed or weakly expressed in tissues except for some CaWOXs with specific expression patterns. High temperature and low temperature treatment could stimulate or inhibit the expression of WOX gene family members.