Acute pulmonary embolism (APE) is a life-threatening disease. Rapid and accurate diagnosis is crucial for the clinical management.We report a case of a 74-year-old man diagnosed intermediate-risk APE as several pulmonary emboli in pulmonary artery were seen in multidetector computed tomographic pulmonary angiography with normal blood pressure and echocardiographic right ventricular overload. And we found a pulmonary artery clot in the right pulmonary artery through transthoracic echocardiography by using a new view. The view could provide correct diagnoses by identifying the clot size and location visually. Knowledge of the echocardiography results of APE would aid the diagnosis.