The invention relates to the technical field of food processing, in particular to a moon cake with passion fruits, five kernels and sweet-roasted pork and a preparation method thereof. The moon cake comprises a wrapper material and stuffing; the wrapper material is mainly prepared from plain flour, cooked glutinous rice flour, passion fruit juice, purple potato powder, cassava powder, okra powder, moringa oleifera powder, Chinese cabbage powder, bitter gourd powder, murraya exotica powder, lemon juice, cerealose, isomalt, monocalcium phosphate, baking powder, white oil, artemisia oil, rice bran oil, alkali water and the like; the stuffing is prepared from the sweet-roasted pork, the five kernels, eggplants, wax gourds, tangerine peels, pomelo peels, lotus roots, syrup, xanthan gum, sodium diacetate and the like; then, the moon cake is prepared by molding, baking and other steps. The moon cake with the passion fruits, the five kernels and the sweet-roasted pork has the advantages of being golden in color, transparent in luster, mellow in taste, sweet but not greasy, soft and crisp, rich in nutrient, long in shelf life, simple in preparation method and easy to produce, and has unique fruit fragrance and floral fragrance and the health-care effects of clearing heat, removing toxicities, promoting appetite, inducing saliva, maintaining beauty, keeping young, losing weight, reducing fat and the like.