Primary cardiac tumors usually are benign and are left atrial myxoma. We experienced with two cases of left atrial myxoma recently, and underwent surgical resection successfully. Diagnoses were obtained by echocardiogram and the angiocardiography was not performed. The operation consisted of excision of the tumor with a segment of atrial septum or wall through a right atriotomy, transseptal approach. Postoperative functional results were good and the literature is reviewed.