Stress urinary incontinence (SUI) is a major health problem that has substantial and important effects on health-related quality of life. In recent years, extracorporeal magnetic innervation (ExMI) has become a preferred method of treatment in urinary incontinence. This study presents the effects of ExMI treatment on pelvic floor muscle strength, urinary symptoms, incontinence conditions and quality of life of older women with SUI. A total of 13 patients between the ages of 61 and 69 (mean 65.23 ± 2.8 years) were treated for SUI with ExMI. The following parameters were investigated: urinary symptoms, pelvic floor electromyographic (EMG) activity, 1-h pad test, incontinence conditions utilizing visual analog scale (VAS) and quality of life using Turkish version of the Urogenital Distress Inventory (UDI-6) and the Incontinence Quality of Life Instrument (I-QoL). All assessments were conducted at baseline and at the end of the study. Treatment lasted for 20 min, twice a week and for a total of 6 weeks. The urinary symptoms and incontinence conditions decreased after the ExMI treatment sessions. The pad test results indicated a reduction in urine loss (p = 0.016). EMG values were improved (p = 0.005). Scores of I-QoL, UDI-6 and VAS were reduced after the treatment, respectively (p = 0.002), (p = 0.002) and (p = 0.006). Extracorporeal magnetic innervation can be considered as it is an alternative, non-invasive and painless treatment method with good compliance for treatment of SUI in older patients.