The invention belongs to the field of medicines and particularly relates to a capsule of a traditional Chinese medicine preparation for treating cardiovascular and cerebrovascular diseases. The capsule is prepared from the following components by weight: tatarinow sweetflag rhizome, salvia miltiorrhiza bunge, platycladi seed, polygala tenuifolia, liriope, poria with hostwood, pollen typhae, tortoise shell, dragon bones, purslane, rehmanniae praeparatum, antler, and acanthopanax, which are respectively 1.5 parts; szechuan lovage rhizome, coptis chinensis, amur corktree bark, pinellia ternate, corydalis tuber, rhizoma curcumae longae, angelica sinensis, astragalus mongholicus, spina date seed, twotooth achyranthes root, white paeony root, earthworm, ginseng, teasel root, mulberry leaf, rhizoma polygonati, rehmanniae vaporata, zedoary, semen cassiae, tuber fleeceflower stem, leonurus, herba epimedii, rhizoma drynariae and bupleurum, which are respectively 1.3 parts; elecampane, rhizoma atractylodis, fried bighead atractylodes rhizome, bitter orange, polygonum cuspidatum, dried orange peel, hairyvein agrimony and purple perilla, which are respectively 1 part; and capillary artemisia and pearl, which are respectively 0.5 part. The preparation has the advantages of wide and rapid curative effect and high cure rate, is a pure traditional Chinese medicine preparation without any toxic or side effect and is suitable for arrhythmia, auricular fibrillation, ventricular conduction block, coronary heart disease, coronary atherosclerotic heart disease (angina and myocardial infarction), mitral valve stenosis, mitral valve insufficiency and hypertensive heart disease complications.