Abstract: Objective The freezing method has been widely applied in link passage projects. Its implementation effects vary to some extent across different stratigraphical and surrounding environmental conditions, necessitating further research on the development of freezing temperature fields in metro link passages within coastal soft soil strata. Method Taking two link passages in an interval of Shanghai Rail Transit Line 15 as the research background, a three-dimensional finite element numerical model is established using ANSYS software. The influence of cooling capacity loss on freezing temperature field development is analyzed based on stratum temperature changes during freezing construction. Numerical simulation calculation results are compared and validated against field-measured data to examine the temperature field development in link passages within the same stratum and interval. Result ＆ Conclusion Two adjacent link passages in the same interval exhibited similar temperature field development law. However, due to cooling capacity loss in the brine circulation system, the soil temperature decrease rate in No.1 link passage is lower than that in No.2 link passage. The freezing efficiency of No.1 link passage is inferior to that of No.2 passage, though the difference in temperature field development of the two link passages gradually diminishes with prolonged freezing duration. After 45 days of freezing, the freezing curtain thickness around No.1 link passage weak sections reaches 2.2 m, with an average temperature of-10.23℃. The freezing effect in silty sand layer surpasses that in gray silt layer, exhibiting freezing development speeds of 31.05 mm/day and 28.53 mm/day in silty sand layer and gray silty layer respectively.