Abstract: Objective When the AGF（artificial ground freezing） method is applied in different water-rich strata, the freezing characteristics of the frozen soil vary significantly. It is therefore necessary to study the variation of the temperature field and ground deformation law during the freezing construction process in a typical calcareous cemented stratum, for a metro line link passage freezing project in Zhengzhou City. Method Based on the above project in Zhengzhou, the arrangement plan of umbrella-shaped freezing holes and temperature measurement holes is described. Field measurements are conducted for brine temperature, measuring point temperature, and vertical displacement at ground monitoring points directly above and adjacent to the link passage during freezing excavation and thawing periods. The variation of the temperature field and the ground deformation law during freezing construction are analyzed based on the measured data. Result ＆ Conclusion During the freezing period, all temperature measurement holes exhibit a similar temperature drop trend, which can be divided into four stages: rapid cooling stage, phase transition stage, secondary cooling stage, and stable freezing stage. In the rapid cooling stage, shallowly embedded measuring points will cool faster than deeper ones, whereas the opposite is observed during the secondary cooling stage. During latent heat release, the time required for deeper measuring points is three times that of shallower ones. In calcareous cemented strata, the temperature difference between different depth measurement points in soil is relatively small, while in silty clay strata, the temperature difference is significantly larger across depths. During excavation, vertical displacement at monitoring points above and adjacent to the link passage varies considerably. During thaw settlement, substantial settlement occurred in the soil near the link passage central axis and its overlying region, indicating the need to reinforce grouting in this area to control thaw-induced settlement.