Abstract: In order to improve the temperature control and crack prevention safety of concrete high arch dams, combined with the characteristics of the Jinghe Dongzhuang 230 meter ultra high arch dam project, a three-dimensional finite element method was used to analyze the influence of four key temperature control factors, namely concrete pouring temperature, cooling water pipe spacing, cooling water temperature, and water flow rate, on temperature stress. The degree of influence of different temperature control measures on the temperature and temperature stress of the dam body was elucidated. The results are as follows. For every 2°C increasing in concrete pouring temperature, the maximum temperature of the dam concrete was elevated about 0.8℃～1.2℃, and the maximum tensile stress increased about 0.2 MPa～0.3 MPa, rising the risk of concrete cracking; The spacing between cooling water pipes varies from 3.0 to 1.5 meters, which can reduce the internal maximum temperature by nearly 4℃ and significantly lower the early maximum temperature of concrete; The cooling water temperature had a significant impact on the maximum temperature and the water cooling rate, and for every 2℃ decrease in the water temperature, the maximum temperature decreased by about 0.1℃～0.4℃. Therefore, it was more beneficial to control the maximum temperature by appropriately lowering the cooling water temperature at the initial cooling stage; The influence of water flow rate was mainly reflected in the maximum temperature of concrete at early stage and the water flow time of each stage, while the influence on the temperature stress inside the dam body was not obvious. In summary, the pouring temperature and the initial cooling water temperature were determined as the factors with high temperature control sensitivity. This research provides a theoretical basis for recommending temperature control measurements and improving the crack resistance safety of the dam concrete.