The　utilization　of　spatial　curve　shield　tunnelling　has　now　emerged　as　the　prevailing　approach　in　shield　engineering,　giving　rise　to　a　more　intricate　ground　influence.　This　paper　establishes　a　three-dimensional　computational　model　based　on　the　elastic　pass　solution　and　integrates　existing　research　to　derive　a　comprehensive　analytical　solution　for　the　additional　stresses　induced　in　the　ground　during　shield　tunnel　construction　under　complex　spatial　curve　conditions　formed　by　connecting　two　simple　line　segments.　The　theoretical　approach　proposed　in　this　study　is　subsequently　validated　through　the　utilization　of　a　sophisticated　numerical　model　and　the　approximate　solution　derived　from　previous　research.　Based　on　the　yaw　tunneling　phenomenon　of　a　shield　in　spatial　curves,　this　paper　independently　analyzes　the　additional　stress　field　of　the　soil　by　incorporating　relevant　yaw　parameters　and　ultimately　derives　a　series　of　fundamental　principles　for　shield　tunneling　in　space　curves.　The　findings　presented　in　this　paper　have　significant　implications　for　a　wide　range　of　shield　tunneling　projects.