It is effective in the treatment of coronary heart disease, angina pectoris and arrhythmia of qi stagnation and blood stasis. There are many types of coronary heart disease in Chinese medicine, the common ones are phlegm-dampness, cold-clotting, qi stagnation and blood stasis. Riki Shuxin Tablet can only treat qi stagnation and blood stasis type of coronary heart disease. After determining coronary heart disease, whether to choose Riki Shuxin Tablet should not depend on the symptoms of coronary heart disease, but on whether there are symptoms of qi stagnation and blood stasis. The criteria for the diagnosis of qi stagnation and blood stasis are purple tongue, distension and pain in the rib cage and irritability. On top of these symptoms, it can only be used if there is pain in the precordial region, chest tightness and shortness of breath. The key drugs of Riki Shuxin Tablet for treating Qi stagnation and blood stasis are blood activating drugs, so they are prohibited for pregnant women, otherwise they will lead to miscarriage. Blood-activating drugs taken for a long time can lead to dizziness and weakness, and after the effect of half a month of continuous use should be stopped for a week before continuing to take them.