Abstract:〔Abstract〕 Objective To evaluate the clinical efficacy of urinary kallidinogenase combined with alteplase intravenous thrombolysis in the treatment of acute cerebral infarction. Methods 136 patients with acute cerebral infarction treated in Penglai people's Hospital from February 2017 to September 2019 were randomly divided into observation group and control group, with 68 cases in each group. The control group was given routine intravenous thrombolytic therapy with alteplase, and the observation group was treated with urecolin on the basis of the control group. The comprehensive curative effects of the two groups were evaluated 3 months after treatment. Results After treatment, the scores of NIHSS and Barthel Index (BI) in the observation group were better than those in the control group (P < 0.05). The improvement of neurological function and ADL in the observation group was better than that in the control group (P < 0.05). The total effective rate of the observation group was 94.1%, which was significantly higher than 82.4% of the control group (P < 0.05). Conclusion Urinary Kallidinogenase combined with alteplase intravenous thrombolysis is effective in the treatment of acute cerebral infarction.