The invention discloses a 
lovastatin-containing 
enteric coated sustained-release pellet 
capsule and a preparation method thereof. The 
lovastatin-containing 
enteric coated sustained-release pellet 
capsule comprises two parts, namely, an 
enteric coated sustained-release pellet and a hollow 
capsule, wherein the enteric coated sustained-release pellet comprises 55-86% of 
medicine-containing pellet core, 2-5% of isolation 
coating layer, 2-15% of a sustained-release 
coating layer and 10-25% of enteric-coated 
coating layer by weight. The prepared 
lovastatin enteric coated sustained-release pellet capsule is uniform in granule size and stable in 
medicine release; the 
medicine is not released in 
gastric acid but is slowly and constantly released in intestinal tracts and livers, has the characteristic of targeted medicine release, is small in 
irritation to gastrointestinal tracts, and can reduce the toxic and side effects of the medicine and reduce the number of the medicine administrations, so that the compliance of patients is improved; and meanwhile as the enteric coated sustained-release pellet preparation is composed of hundreds of 
pellets of uniform granule sizes, the sudden release of the whole preparation is not caused by the breakage of individual 
pellets, so that the medicine is 
safer than a sustained-release tablet, smaller in 
irritation to gastrointestinal tracts and more stable in 
blood concentration, and the 
clinical effectiveness and security are effectively improved.