Abstract: Taking the frozen cross passage at Jinshan Station-Jinxiang Station interval of Fuzhou Metro as the engineering background, by combining field measurement and finite element numerical calculation, the development characteristics and influencing factors of frozen temperature field thawing full process are analyzed and studied. Research results show that the cooling rate of soil inside the frozen pipe is 1.26 times that of soil outside. Affected by the frozen pipe arrangement, the frozen wall at bell mouth is shaped like a horse foot, while the frozen wall at passage presents a rectangular. At the end of active freezing in normal passage section, the average effective thickness of frozen wall is 2.62 m, and the average temperature is -11.3 ℃. At the end of maintenance freezing, the effective thickness of the frozen wall increases by 0.23 m, and the average temperature decreases by 0.2 ℃. During natural thawing, the soil temperature on the outer side rises significantly faster than that on the inner side. The development of freezing temperature field in cross passage is greatly affected by different factors. The influence of initial ground temperature is mainly at the early active freezing stage, and the influence of soil thermal conductivity is mainly at the late active freezing stage.