Abstract: With the analysis of the shortages of traditional power supply for hot cell transfer system, a novel contactless power supply system is proposed based on the study of magnetic coupling structure, which realizes the reliable contactless power supply for the hot cell transfer system when it moves randomly. Contactless power supply system can overcome the motion limitation compared with traditional hot cell transfer system, and improve the flexibility of hot cell operation. The feasibility of contactless power supply for hot cell transfer system is verified by theoretical analysis and computer simulation.