In order to explore the temperature control scheme of Yongning Sluice Dam concrete construction, taking No.12 overflow section of the sluice dam as the research object, a 3 D finite element model is established to analyze the concrete temperature field and temperature stress under three construction schemes. The results show that when scheme 1 is adopted in low temperature season, the temperature field and temperature stress in the construction process can meet the specification requirements. When scheme 2 is adopted in high temperature season, the maximum temperature and maximum temperature stress in the construction process can not meet the specification requirements. However, when scheme 3 is adopted in high temperature season, the maximum temperature and maximum stress in the construction process can meet the specification requirements. It is suggested that the natural pouring method should be adopted in low temperature season. When pouring in high temperature season, the pouring temperature of bottom slab concrete should not exceed 14 ℃, and that of pier concrete should be no higher than 16 ℃, meanwhile, water cooling measures should be taken too. The calculation results can provide some reference for the construction scheme design of Yongning Sluice Dam and other similar projects.