The invention discloses an enclosure system construction method of a soft soil stratum for reducing influences of shield tunneling on a building foundation, and belongs to the field of architectural engineering. A pipe isolation pile and a sleeve valve pipe are used for construction work in front of a building and in the tunneling direction to form a curtain wall for guaranteeing the safety and stability of the building in the subway tunneling process. According to the enclosure system construction method of the soft soil stratum for reducing the influences of shield tunneling on the building foundation, steel pipe piles are used as the main structure of the curtain wall, a one-way sleeve valve pipe is used for construction between the steel pipe piles, and the main purpose of constructing a curtain wall structure between the tunneling direction and the building foundation is achieved. The influences on the building are overcome in the shield tunneling process, the safety of the building is guaranteed when a shield tunneling machine penetrates through a shallow overburden soil section under the building, a curtain wall is formed between the building and a tunnel in the longitudinal direction along the tunnel, action force borne by soil mass under the building is reduced during shield tunneling, stratum loss caused by a gap and sedimentation after the soil mass are isolated and reduced through stress, and the safety of the building is guaranteed when the shield tunneling machine penetrates through the shallow overburden soil section. The enclosure system construction method of the soft soil stratum for reducing the influences of shield tunneling on the building foundation has the characteristics of being simple, rapid, and effective, high in generalization performance and practicability, and the like.