The invention discloses a pull rod structure of a low-temperature container. The pull rod structure comprises a pull rod body, a metal sleeve and a pretightening nut. The metal sleeve is provided with a through hole, and a thread is arranged on an outer cylinder face. The metal sleeve is arranged at the end of the pull rod body, and the metal sleeve and the pull rod body are in interference fit. The pretightening nut is arranged on the metal sleeve. The pull rod structure is simple and compact, the needed installation space is small, the manufacturing cost is low, strength is high, safety is high, heat leakage is small, and performance is reliable.