Abstract: To investigate the impact of climate change on the crop water requirement (CWR) and irrigation water requirement (IWR) of rice in Hubei Province, we calculated the CWR and IWR based on historical meteorological data from 1960 to 2019 in Hubei Province.The temporal variation of CWR and IWR during different rice growth stages was analyzed, and the influence of climate change on rice IWR was examined using correlation analysis.The results indicated that: ① The CWR and IWR of rice showed an overall increasing trend.The climate tendency rates of CWR during the early, middle, late, and entire growth stages were 11.82, 12.61, 11.26 mm/10 a, and 86.55 mm/10 a, respectively.Correspondingly, the climate tendency rates of IWR for these stages were 31.71, 27.02, 28.69 mm/10 a, and 87.41 mm/10 a, respectively.② Spatially, the variation in rice CWR and IWR across Hubei Province was characterized by higher values in the southwestern mountainous areas and the central plains and hilly areas, and lower values in the northeastern hilly areas.③ Correlation analysis revealed that IWR was negatively correlated with effective precipitation and relative humidity, while positively correlated with air temperature and sunshine duration.The findings of this study are significant for ensuring food security, formulating irrigation strategies, and optimizing water resource allocation for rice production in Hubei Province.