Purpose] The purpose of this study was to investigate the functional factors related to hemiplegic patients' ability to ascend and descend steps. [Participants and Methods] Forty hemiplegic patients participated in this study. Age, gender, height, body mass index, type of stroke, time from stroke onset, distribution of paralysis, ability to ascend and descend steps, Brunnstrom recovery stage score of the lower extremity, proprioceptive deficits, unaffected knee extensor muscle strength, and

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... ht-bearing ratios of the affected and unaffected lower extremities were examined. [Results] According to logistic regression analysis, the weight-bearing ratio of the affected lower extremity was a significant factor related to the ability to ascend and descend steps. When the cutoff value was set to 77.5%, the area under the curve was 0.838, indicating discriminating ability. [Conclusion] We examined functional factors' relationships with hemiplegic patients' ability to ascend and descend steps. A higher weight-bearing ratio on the paralyzed side indicated a better ability to ascend and descend steps.