Objective To investigate the clinical value of color doppler echocardiography in the diagnosis of 302 cases of supraventricular total and partial pulmonary venous connection (TAPVC and PAPVC), and to analyze the causes of misdiagnosis and missed diagnosis. Methods This study retrospectively analyzed the color doppler ultrasonography of 204 cases with TAPVC and 98 cases with PAPVC. Compared with CT or surgery, the causes and identification points of misdiagnosis were analyzed. Results (1)The accuracy of ultrasound echocardiographic diagnosis of the supraventricular TAPVC 204 cases was 100.0%. In terms of drainage site, 193 cases were transferred to the brachiocephalic vein; 11 cases were directly open to the right superior vena cava. In terms of drainage count, 202 patients showed complete pulmonary veins; only 2 patients showed 3 pulmonary veins. It combined with malformations, such as 165 cases (80.9%) of atrial septal defect, 34 cases (16.7%) of patent foramen ovale.(2) The ultrasound echocardiographic diagnosis of the supraventricular PAPVC 98 cases can clearly diagnosed 74 cases, misdiagnosed 20 cases(6 cases of misclassification of ultrasound classification and 9 cases of misdiagnosis of drainage count, 5 cases of normal operation), missed diagnosis 4 cases(3 cases of ultrasound only indicated atrial septal defect and 1 case of isolated anomalous pulmonary venous venous connection). The diagnostic accuracy rate, misdiagnosis rate and missed diagnosis rate were respectively 75.5%, 15.3% and 9.2%. In terms of drainage site, 60 cases were introduced into the brachiocephalic vein, 37 cases were directly transferred into the right superior vena cava, and 1 case was transferred into the superior vena cava via azymatic vein. In terms of drainage count, 71 cases were single, 21 cases were two, and 6 cases were three. It combined with malformations, such as 67 cases (68.4%) of atrial septal defect, 15 cases (15.3%) of patent foramen ovale. Conclusion The accuracy of ultrasound in the diagnosis of PAPVC is weaker than TAPVC. By consciously enhancing the flexible application of non-standard sections such as the parasternal, xiphoid, right supraclavicular superior vena cava long axis, we can comprehensively scan abnormal blood vessels, and pay attention to the location of ectopic drainage, the number of inflows, and the combined malformations. We need to comprehensively sweep abnormal blood vessels, and pay attention to the location of ectopic drainage, the number of sinks and the combined deformity. Then we value artifacts and differential diagnosis of normal or abnormal intracardiac structures. These aspects help to reduce the rate of misdiagnosis of supraventricular pulmonary venous drainage.