The invention discloses a construction method of large-volume concrete in severe cold areas, which comprises the steps of 1, mix proportion design of concrete raw materials; 2, heat preservation storage of the concrete raw materials, wherein the step further comprises the sub-steps of 2.1, heat preservation storage of gravel aggregates, and 2.2, storage and heating of water by adopting an electricheating water tank; 3, mixing of the concrete raw materials; 4, concrete transportation; 5, concrete pouring; and 6, concrete maintenance. According to the construction method of large-volume concrete in the severe cold areas, heat preservation can be performed on the concrete forming process through setting the measures of performing heat preservation on the concrete raw materials, performing heat preservation on the raw material mixing process, performing heat preservation on concrete transportation and pouring and performing heat preservation on concrete maintenance, thereby ensuring the mixing quality, the pouring quality and the forming quality of the concrete.