Abstract: In recent years, accelerated urbanisation and increased urban construction have led to surface hardening, exerting a certain influence on the evolution of regional hydrological factors. Focusing on the impact of urbanisation on regional hydrological factors in Zhengzhou, this study provides decision support for urban flood prevention planning and heat island mitigation. Taking Zhengzhou as the study area, remote sensing technology combined with field measurements, mathematical statistics, and correlation analysis were employed to examine land use changes and the relationship between urbanisation, precipitation, and temperature variations in Zhengzhou from 2000 to 2020. Results indicate: ① Over two decades, Zhengzhou's dominant land uses remained cultivated land and construction land. Construction land exhibited the highest dynamic intensity, followed by water bodies, grassland, forest land, and cultivated land. Construction land increased at an average annual rate of +59.59 km²/a, with the comprehensive land use intensity index showing an upward trend. ② Three precipitation indicators—annual maximum daily precipitation, annual precipitation, and annual maximum three-day precipitation—all exhibited declining trends in both urban and suburban areas. The difference between urban and suburban values remained positive and increasing, indicating greater susceptibility to heavy rainfall events in urban areas. ③ Annual maximum and minimum temperatures both showed upward trends; Urban areas exhibit higher daily average maximum and minimum temperatures than suburban areas. Average temperatures in July and January show increasing trends, with urban areas experiencing faster growth rates than suburban areas. ④ Over the past 20 years, precipitation and land use intensity in Zhengzhou City have shown negative correlations, while temperature and land use intensity have demonstrated positive correlations. These findings provide a basis for research on land use changes in Zhengzhou City and offer scientific reference for investigating the patterns of hydrological element changes induced by urban development.