Waterproof connection node structure of partition wall and foundation slab in foundation pit

The utility model discloses a waterproof connection node structure of a partition wall and a foundation slab in a foundation pit. The waterproof connection node structure comprises a pre-poured foundation slab (1), a post-poured concrete layer (2), a first water stop component (4) and a second water stop component (5), the pre-cast foundation slab is located on a cushion layer (6) of the pre-manufactured foundation pit, a post-cast cavity is formed in the end, connected with the middle partition wall (3), of the pre-cast foundation slab, the post-cast concrete layer is located in the post-cast cavity, and the post-cast concrete layer and the pre-cast foundation slab form a foundation slab structure of the pre-manufactured foundation pit. The first water stop component is arranged at one end of the post-pouring concrete layer and located at the joint of the post-pouring concrete layer and the pre-pouring foundation bottom plate, and the second water stop component is arranged at the other end of the post-pouri