Research conclusions: From the concrete construction example and the field data about the construction process it is concluded the control of concrete matching ratio，inspection of material quality and control of insulation after construction are the key sectors to prevent the crack of mass concrete，and the ratio of reinforcement，construction scheme and adding agent are also the important sectors to prevent the crack of mass concrete．Therefore，the construction scheme should be implemented strictly in construction and the responsibility sense of the constructors should be strengthened to ensure there is no error in every key link．