Horizontal and vertical switchable rolling mill set

The utility model provides a horizontal and vertical switchable rolling mill set with a horizontal rolling mill and a vertical rolling mill which can be switched mutually. A rolling mill framework 14, a rolling mill base 15, a main motor 1 and a main transmission device 2 are shared by the horizontal rolling mill and the vertical rolling mill in a horizontal state, the horizontal rolling mill mainly consists of a lower horizontal connecting shaft 3, a connecting shaft bracket 10, a horizontal rolling mill rail support 5 and a moving device 12, and the vertical rolling mill mainly consists of an upper horizontal transmission shaft, a bevel gear transmission box 7, a reversing transmission shaft 8, a vertical transmission box 9, a vertical connecting shaft 11, the connecting shaft bracket 10 and the moving device 12. Power of the horizontal rolling mill is transferred by the main transmission device, and power of the vertical rolling mill is transferred from the upper horizontal transmission shaft of the main d