Objective To analyze the effect of surgical teaching training on the scar condition of median sternal incision in cardiovascular surgery. Methods From April to June 2022, the "surgical teaching training" activity was carried out in the cardiovascular surgery department of our hospital, of 32 patients with cardiovascular disease in the median sternal incision were selected as the observation group, and 32 patients with cardiovascular disease in the median sternal incision from January to March 2022 were selected as the control group. The median sternal incision healing time, scar width, scar score, incision complications and patient aesthetic satisfaction were observed and compared between the two groups. Results The healing time of median sternal incision in the observation group was shorter than that in the control group, and the scar width was smaller than that in the control group (P