Considering the apparent difference between global forecasting model and convection-permitting model in resolution ratio, an intermediate limited-area model should be used to provide Lateral Boundary Condition Perturbations(LBCPs) for Storm-Scale Ensemble Forecast(SSEF), but the problem that what kind of LBCPs are the most suitable for SSEF still remains unknown. Three different LBCPs schemes are tested in a case study based on WRF model. The results show that LBC_DOWN has better large scale perturbation energy while LBC_CYCLE has more in smaller scale. The blended method LBC_BLEND is much closer to LBC_DOWN at large scale and much closer to LBC_CYCLE at smaller scale; the blended method LBC_BLEND also perform better at spread-skill than the other two experiments; meanwhile, LBC_BLEND has almost the same skill as LBC_CYCLE has in precipitation probability forecast.