IntroductionThe clinical translation of magnetic stimulation for central nervous system trauma is severely hindered by “parameter ambiguity”—the lack of evidence-based screen of stimulation protocol. Repetitive trans-spinal magnetic stimulation (rTSMS) holds therapeutic promise, yet its frequency-dependent effects on the complex spinal microenvironment remain poorly understood. To address this gap, this study aimed to decode the frequency-response relationship of rTSMS and establish an optimal,