In order to study the impact of temperature and humidity curing environment on the performance of concrete in high ground temperature water conveyance tunnels, the compressive strength and drying shrinkage of the concrete after cold shock were investigated. The effects of temperature and humidity coupling on the compressive strength, shrinkage characteristics, and pore structure of concrete after cold shock damage (CCSD) under two temperatures (20 ℃ and 50 ℃) and three relative humidity (RH) levels (43%, 75%, and 98%) were analyzed. The results indicate that the elevated temperature and humidity curing environment can enhance the compressive strength of concrete after cold shock damage and mitigate drying shrinkage. It has been demonstrated that elevated temperatures can cause damage to larger pore structures, expand the pore proportion above 600 nm and increase the relative mass loss of the system. However, it has also been shown that such temperatures can promote hydration reactions, improve the early strength of concrete and reduce the sensitivity to relative mass loss. Based on CEB-FIP MC 2010 model, the drying shrinkage prediction model of CCSD is established, which can predict the drying shrinkage of CCSD accurately and effectively. The aforementioned research outcomes offer a theoretical reference for the construction and maintenance of diversion tunnels under high ground temperature.