An X-ray real-time imaging device includes a first C-shaped arm slidably disposed on a second C-shaped arm, wherein the first C-shaped arm is provided with a first X-ray generating device and a first video receiving device, thereby constituting a first imaging device, and the second C-shaped arm is provided with a second X-ray generating device and a second video receiving device, thereby constituting a second imaging device, wherein the axis of rotation of the first C-shaped arm is the same as that of the second C-shaped arm. When the first C-shaped arm slides along the second C-shaped arm, different angles can form between the first and second imaging devices, and as the axes of rotation of the first and second arms are the same, the axis of rotation of the first imaging device is the same as the axis of rotation of the second imaging device.
