According to the inter-turn short circuit problem of single-phase transformer, the electromagnetic vibration characteristics of different turn-to-turn short-circuit ratios are studied.The electromagnetic coupling principle is used to establish the inter-turn short-circuit state equation of the transformer.The electromagnetic parameters and vibration acceleration changes under different short-circuit ratios are simulated.Under different inter-turn short-circuit faults, the short-circuit winding current direction changes, the amplitude becomes larger, and the un-short winding current changes less; the internal leakage flux increases and the leakage flux in the corresponding area of the short-circuit winding increases significantly; the winding vibration due to the increase of current and leakage flux Intensified; electromagnetic parameters and vibration acceleration are further changed as the proportion of short-circuit between turns is increased.Finally, the inter-turn short-circuit dynamic model experimental platform is built to measure the winding current and vibration acceleration under different inter-turn short-circuit faults at the head end of the transformer.The simulation results and experimental data are compared to verify the validity of the model and the correctness of the conclusions obtained.