〔Abstract〕 Objective To study the clinical effect of modified Buyang Huanwu decoction in elderly patients with cerebral infarction in convalescent stage. Methods A total of 56 elderly patients in the convalescent stage of cerebral infarction admitted to Xianyou General Hospital from December 2021 to December 2022 were randomly divided into an observation group and a control group, with 28 cases in each group. The patients in the control group received conventional western medicine treatment, and the patients in the observation group were given modified Buyang Huanwu decoction treatment on the basis of the control group, and the clinical effects of the two groups were compared. Results After treatment, the Barthel index score in the observation group was higher than that in the control group, the difference was statistically significant (P < 0.05). After treatment, the score of National Institute of Health stroke scale (NIHSS) in the observation group was lower than that in the control group, and the difference was statistically significant (P < 0.05). After treatment, the scores of traditional Chinese medicine (TCM) syndrome in the the observation group were lower than those in the control group, and the differences were statistically significant (P < 0.05). Conclusion Adding modified Buyang Huanwu decoction on the basis of conventional western medicine treatment can produce ideal clinical therapeutic effect for elderly patients in the convalescent stage of cerebral infarction.