Objective To explore the effect of gender on the concentration of D-dimer between the healthy and the patients with aortic dissection.Methods From January 2015 to January 2016,53 patients with aortic dissection were treated in a hospital and 50 patients of health control group were matched by age,Sysmex CS5100 was used to detect the concentration of D-dimer in the selected population,and the results were analyzed statistically.Results In the same age group,the concentration of D-dimer in healthy control group female was higher than that in male,difference was statistically significant (t=5.357,P<0.05);The concentration of D-dimer in male patients with aortic dissection group was higher than that of female patients,difference was statistically significant(t=-2.041,P<0.05).The concentration of D-dimer in patients with aortic dissection group was higher than that of the healthy control group,difference was statistically significant(t=5.757,P<0.05).Conclusion The concentration of D-dimer between healthy adults and patients with aortic dissection exist gender differences,and it has a certain correlation.