Objective To study the value of coronary commodity trading advisor(CTA)based on dual source CT in the diagnosis and treatment of coronary heart disease.Methods Totally 57 patients with coronary heart disease were selected from the Third People's Hospital of Huzhou City and the Huzhou Ming State Hospital from June 2019 to October 2022,Dual source CTA and digital subtraction angiography(DSA)were performed successively,and the results were compared and analyzed.Results The sensitivity,accuracy,specificity,positive predictive value and negative predictive value of dual source CTA were 90.63%,95.18%,98.48%,97.75%and 93.53%,respectively.There was no significant difference between the two results(P>0.05).Conclusion Dual-source coronary artery has high sensitivity,accuracy,specificity,positive predictive value and negative predictive value in the diagnosis of coronary artery stenosis,which is significantly consistent with gold standard DSA coronary angiography,the technique of non-invasive angiography can reduce the occurrence of many complications,which is simple,safe and reliable,and plays a guiding role in the prevention and treatment of coronary heart disease.Dual-source coronary CTA has high sensitivity and accuracy,and noninvasive angiography can reduce many complications.It is simple,safe,reliable and cheap,it plays a guiding role in the prevention and treatment of coronary heart disease.