In order to know the blood supply features and branch characteristic of coronary artery in the heart of Panthera pardus and Arctonyx collaris and to provide the structural basis for heart biology study,we observed the branches and distribution of the coronary arteries in P.pardus and A.collaris by arterial vascular casting and tissue transparance method.The results showed that the nutrition of P.pardus and A.collaris heart was all supplied by left and right coronary arteries.The left coronary artery of P.pardus was divided into interventricular septal branch,anterior descending branch and circumflex branch.Anterior descending branch gave off superior branch of left ventricle,midterm branch of left ventricle and below branch of left ventricle.The right coronary artery of P.pardus was divided into anterior branch of right ventricle,posterior below branch of right ventricle and posterior superior branch of right ventricle.The left coronary artery of A.collaris was divided into anterior descending branch and circumflex branch.Anterior descending branch gave off interventricular septal branch and anterior branch of left ventricle,circumflex branch gave off left fringe branch and posterior branch of left ventricle.The right coronary artery of A.collaris was divided into anterior branch of right ventricle,right fringe branch and posterior branch of right ventricle.The interventricular septum of P.pardus and A.collaris was all supplied by an independent interventricular septal branch that was from the left coronary artery.The distribution type of left and right coronary arteries on the diaphragmatic surface in P.pardus and A.collaris heart is the balance circulation type.