The construction of mass concrete for crossing tower pile foundation in 500 kV quadricircuit Xijiang large crossing transmission line project is considered. Based on the thermal calculation of mass concrete crack control during the construction stage, some technical measures are formulated including the optimization of concrete mixture, concrete temperature control, concrete layered pouring, and integrated conservation of internal distribution and external store etc, so that the construction is effectively guided, the harmful mass concrete cracks successfully avoided, and good effects received.