The Epstein frame is widely adopted in one-dimensional magnetic measurement methods. However, in certain cases, the iron loss calculated based on the test results of the Epstein ring method differs significantly from the actual measured values. To address this issue, this paper presents a study on the magnetic properties of toroidal silicon steel laminations. Firstly, finite element analysis (FEA) of toroidal silicon steel laminations was performed. By analyzing and comparing the magnetic field distribution along the radial direction within the toroid, key factors influencing its magnetic properties were preliminarily identified. Based on the magnetic field simulation results, the magnetic characteristics of toroidal cores with varying parameters were then experimentally measured. The integrated analysis of computational and experimental results demonstrates that the ratio of outer diameter (Do) to inner diameter (Di) primarily affects the fundamental magnetization curve and the magnetic field distribution; the effective magnetic path length has a significant influence on the core loss curve; while the lamination thickness exhibits a negligible effect on the magnetic properties under the conditions studied.