Abstract: As an essential rehabilitation physiotherapy equipment and non-invasive neuromodulation technology, repetitive Transcranial Magnetic Stimulation (rTMS) plays a vital role in the treatment of psychiatric diseases and brain function modulation. Since rTMS uses the pulsed magnetic field to act directly on the human brain, the magnetic induction intensity and output frequency of the pulsed magnetic field determine the safety and effectiveness of stimulation. Starting with reviewing the development of TMS, the technical principle of rTMS was introduced, and the research path of its measurement was described in detail. In this paper, the distribution of pulsed magnetic field generated by a typical stimulation coil was obtained by simulation, which could specify the approximate position of the maximum value point of magnetic induction intensity in grey matter. The feasibility of the electromagnetic induction method for measuring pulsed magnetic field has been demonstrated through research and trial production of electromagnetic induction coils and experiments. The measurement method developed in this paper can not only be used for the detection of rTMS in use but also serve cutting-edge scientific research fields such as brain function modulation, contributing to the implementation of the Healthy China 2030 strategy.