Objective To investigate the baseline factors that influenced prognosis after intravenous thrombolytic therapy. Methods All 82 patients received intravenous urokinase (UK) for acute ischemic stroke. The modified Rankin scale score at 90 days was dichotomized into good outcome (mRS 0-1) and poor outcome (mRS 2-6) as the primary outcome measure. Multivariable logistic regression method was used to analyze independent predictors of good outcome. Results The mRS was good in 36.6% and poor in 63.4%. Univariate analysis indicated that age, time from stroke onset to treatment, atrial fibrillation, pretreatment ESS score, baseline serum glucose, early ischemic changes on baseline CT scans and dose of UK were shown correlated significantly with mRS. However, the multivariate logistic regression did select the ESS score, time to treatment, dose of UK and serum glucose as the independent predictors of good outcome. Conclusion Pretreatment ESS score, time to treatment, dose of UK and baseline serum glucose should be independently predictive of outcome in patients with acute cerebral infarction treated by intravenous UK.