The superconducting cyclotron at Variable Energy Cyclotron Centre, Kolkata, is the first compact superconducting cyclotron in Asia. A large superconducting solenoid is used to energize the poles of the cyclotron magnet and it is self shielded by an annular yoke. The magnet can produce maximum magnetic field of 5 Tesla. The technical challenges of using superconducting coil in cyclotron have been aggravated by the characteristic compactness the cyclotron. This 100 Ton machine, a cylindrical structure of 3 meter diameter and 2.2 meter height, can produce a maximum energy of 80 MeV/A for lighter ions and 5-10 MeV/A for heavier ions covering the whole range of the periodic table.