The invention discloses a device for real-time monitoring and correcting the displacement of indoor microform model measuring equipment, comprising a measuring equipment, a sensing device, and a adjusting device that are installed on a truss; the outside of the truss is provided with a horizontal and a vertical base point; the sensing device and the adjusting device both take the horizontal and vertical base points as benchmarks, and are both connected to a controller; the adjusting device is connected to the measuring equipment, which can drive the measuring equipment to fine-tune on the truss. The invention further discloses a real-time monitoring and correcting method using the device. The invention is simple in structure, convenient to use, and easy to install. Since an automatic adjusting device is used, the adjustment value can be accurate to 0.01 mm, making the data obtained from the indoor model observation test more accurate and reliable.