GIS bus connecting device and GIS

The invention provides a GIS bus connecting device and a GIS, the GIS comprises a circuit breaker, an isolation switch and the GIS bus connecting device, the GIS bus connecting device comprises a first joint, a second joint and a third joint, the first joint comprises a first cylinder and a first conductor arranged in the first cylinder, and the second joint comprises a second cylinder and a second conductor arranged in the second cylinder; the first cylinder body is a T-shaped cylinder body formed by a vertical section and a horizontal section, the first conductor is an adaptive T-shaped conductor, and the other two ends of the first cylinder body are respectively provided with a bus connecting structure used for being connected with a corresponding main bus; the second connector comprises a second cylinder and a second conductor, the third connector comprises a third cylinder and a third conductor, and the second cylinder and the third cylinder respectively comprise a linear section and a 7-shaped section c