North anchorage of the Fourth Nanjing Yangtze River Bridge is a kind of gravity anchor. Distributed mortise-tenon anchor system of Reinforced Concrete is designed for its anchor system structure first time in China. Thermal stress and temperature control is the key technique in large mass concrete construction of this anchorage. This article will introduce large mass concrete temperature control method,anchor system fixing technology and high-accuracy survey technology of North anchorage of the Fourth Nanjing Yangtze River Bridge.