This　study　researches　the　evolution　of　the　artificial　freezing　temperature　field　in　metro　cross　passages　in　high　geothermal　areas.　A　water-heat　coupling　numerical　model　was　developed　based　on　the　engineering　context　of　the　Dongmen　to　Mindu　Station　cross　passage　of　the　Fuzhou　Metro　Binhai　Express　Line.　The　effects　of　seepage　velocity,　initial　ground　temperature,　and　brine　temperature　on　the　evolution　of　the　temperature　field　were　analyzed.　The　results　indicate　that　groundwater　flow　leads　to　asymmetry　in　the　thickness　of　the　frozen　curtain　and　the　temperature　distribution　between　the　upstream　and　downstream　areas.　At　a　seepage　velocity　of　7.5　m/d,　the　frozen　curtain　in　the　upstream　area　does　not　reach　the　required　design　thickness　after　55　days　of　freezing.　Increasing　the　initial　ground　temperature　accelerates　the　soil　freezing　rate　but　has　minimal　impact　on　the　final　temperature　field.　Lowering　the　brine　temperature　creates　a　large　temperature　gradient　between　the　freezing　pipe　and　the　soil,　accelerating　the　drop　in　soil　temperature　in　the　later　freezing　stages.　The　initial　ground　temperature　primarily　influences　the　frozen　curtain　closure　time.　Seepage　velocity　significantly　impacts　the　time　required　for　the　frozen　curtain　to　reach　the　design　thickness.