Nitroglycerin, isosorbide nitrate, diltiazem, etc. can be used for acute attacks of angina pectoris, and the specific use of drugs is determined by professional diagnosis. Angina pectoris can be divided into stable angina pectoris and unstable angina pectoris according to the different pathogenesis. For acute attacks of stable angina with fixed stenosis, drugs such as nitroglycerin and isosorbide nitrate can be used. Some Chinese medicinal preparations such as quick-acting heart-saving pills can also be used. However, for unstable angina caused by vasospasm and so on, the above drugs can not be completely applied. For acute attacks of unstable angina, oral administration of such channel blockers as nifedipine and diltiazem is usually required. The above drugs need to be used under the guidance of clinicians after a clear diagnosis of the disease, absolutely prohibit unauthorized use of drugs, it is recommended to go to the hospital in a timely manner, so as to avoid delaying the condition.