Abstract 【Objective】The ZF-HD family genes of castor were identified, and their members were analyzed by sequence analysis, phylogenetic analysis, promoter and expression pattern analysis, which provided a reference for further study on the function of ZF-HD gene in castor.【Methods】Based on the whole genome data of castor, ZF-HD gene was identified, and bioinformatics analysis and expression analysis under abiotic stress were carried out.【Results】A total of 13 ZF-HD gene family members were identified from castor, which were unevenly distributed on Chr1-Chr10.All 13 RcZF-HD proteins were hydrophilic unstable proteins, and subcellular localization was localized in the nucleus. The RcZF-HD gene family was clustered into three subgroups, and the number of genes in each group was different. The gene structure had intra-group conservation and inter-group diversity. RcZF-HD gene family members have a large number of tissue-specific elements, stress response elements and hormone response elements. The ZF-HD gene is widely responsive to abiotic stresses and its expression is tissue-specific.【Conclusion】The results provide a reference for further exploration of the function of RcZF-HD gene, such as regulating the growth and development of castor and responding to abiotic stress.