The invention relates to the technical filed of food processing, and especially relates to puffed chocolate products and a preparation method thereof. The puffed chocolate products are prepared from the following ingredients: cocoa masses, peanut butter with peanut kernel grains, sesame paste, skimmed milk powder, chocolate powder, puffed chocolate corn rings, puffed chocolate corn balls, chocolate essence, cocoa powder, beta-cyclodextrin, hydroxypropyl modified starch, oxidized starch, and pullulan; and the puffed chocolate corn rings are prepared from the following raw materials: corn starch, rice flour, oat flour, wheat flour, white granulated sugar, swelling agent, edible salt, stevioside, water, fructose syrup, maltose syrup, white granulated sugar, edible salt, vegetable oil, butter, monoglyceride, phospholipid, collagen protein, hydroxypropyl modified starch, beta-cyclodextrin, pullulan, chocolate essence, chocolate powder, milk powder, and cocoa powder. The chocolate layers of the puffed chocolate products disclosed by the invention are fine, smooth and refreshing in taste; and the puffed products are crispy in taste. The puffed chocolate products have good heat-resistant stability and moisture resistance.