The invention discloses a T-shaped shearing wall vertically-connecting node, which comprises a first precasting shearing wall and a second precasting shearing wall. The T-shaped shearing wall vertically-connecting node is characterized in that the second precasting shearing wall at the node is provided with a groove; cast-in-place concrete is positioned in the groove and the spacer between the first precasting shearing wall and the second precasting shearing wall; transverse reinforcing steel bars on one side connected with the first precasting shearing wall in the second precasting shearing wall are not connected at the node; the transverse reinforcing steel bars are provided with two extension sections; the two extension sections are mutually overlapped; inward bending sections at the node are connected and vertical with the extension sections; the extension sections and the bending sections are arranged in the cast-in-place concrete; horizontal reinforcing steel bars in the first precasting shearing wall extend to the inside of the cast-in-place concrete; and the horizontal reinforcing steel bars are respectively bent inwards to form second bending sections. The T-shaped shearing wall vertically-connecting node connects the first precasting shearing wall and the second precasting shearing wall into a whole by the cast-in-place concrete, can bear and transfer external forcesin the vertical and horizontal directions and ensure the safety of buildings.