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Well completion engineering is an important component part of oil and gas well construction and a basis of field development implementation. It has a goal of ensuring regular and safe production and prolonging the production life of oil and gas wells. The traditional mode of well completion engineering, which had been adopted in China for a long time, cannot meet the requirements of developing circumstances; thus, reform is needed. After summing up domes-tic and foreign experience and lessons, the new Advanced Well Completion concept has been presented. Based on field geology and reservoir engineering, it adopts the nodal analysis method, and drilling, well completion, and production are organically integrated, thus forming an integrated well completion engineering system.