Supporting seat, superconducting magnet assembly and manufacturing method of supporting seat

The invention provides a supporting seat (10), a superconducting magnet assembly (100) and a manufacturing method of the supporting seat (10). The supporting seat (10) comprises an annular supporting seat body (101) and a reinforcing ring (102), the axis of the supporting seat body (101) and the axis of the reinforcing ring (102) are both coaxially arranged with the axis of the inner coil (20), and the reinforcing ring (102) sleeves and is fixed on the outer surface of the supporting seat body (101); wherein the reinforcing ring (102) is provided with a first connecting part (1021), and the support unit (30) used for supporting the shielding coil (50) of the superconducting magnet can be connected to the reinforcing ring (102) through the first connecting part (1021). By arranging the reinforcing ring (102), the rigidity of the whole inner coil (20) is enhanced, the thickness of the supporting seat body is reduced, and the material cost is reduced; the reinforcing ring (102) provides a connecting interface fo