This invention discloses a method for treating or preventing heart diseases by using a probiotic composition. The method for treating or preventing heart diseases comprises administering to a subject an effective amount of a probiotic composition to prevent the myocardial cells from myocardial hypertrophy, fibrosis and apoptosis, wherein the probiotic composition comprising Lactobacillus rhamnosus LCR177 (BCRC910473), Pediococcus acidilactici PA318 (BCRC910474) and Bifidobacterium adolescentis (BCRC14609).