In order to study the hydration heat of concrete, focusing on a massive concrete pile cap of an industrial park project, this paper introduced relevant construction techniques and control measures, and built a three-dimensional model by finite element analysis to study the effect of cooling pipe. The results showed that the concrete surface takes about 2 days to reach the highest temperature, but then cools quickly, while the outer of concrete takes 3~4 days. Moreover, injecting 0.8 m3/s water into a pipe with an inner diameter of 30 mm has a better cooling effect. The temperature difference between the surface and the interior of concrete can be controlled within 25°C, making the tensile stress on the concrete surface lower than the tensile strength. It is advisable to cover the concrete surface with felt after the age of 2 days, to delay the cooling of surface concrete and control the temperature difference between the surface and the interior.