Structure for adding constructional column at joint of inner wall and outer wall for reinforcing old house

The utility model discloses an old house reinforcing interior and exterior wall junction constructional column structure, which comprises a wall body, the inner surface of the wall body is provided with four drill holes from top to bottom, the inner cavity of each drill hole is inserted with a steel tie bar, the left side and the right side of the wall body are provided with ring beam bodies, and the ring beam bodies are arranged on the left side and the right side of the wall body. A through screw rod is arranged between the two ring beam bodies. The drill holes are sequentially formed in the inner surface of the wall body from top to bottom, the steel tie bars penetrate through the inner cavities of the drill holes, the ring beam bodies are arranged on the two sides of the junction of the wall body and the floor slab, and the two ring beam bodies are fixed to the left side and the right side of the wall body through the oppositely-penetrating screws, so that the purpose of fixing the floor slab is achieved;