The invention belongs to the food processing field, in particular to a low-sugar banana-pineapple compound jam and a manufacture method thereof. The low-sugar banana-pineapple compound jam is prepared from the following raw materials: bananas, pineapples, xylitol, Xanthan gum, citric acid and ascorbic acid through the steps of selecting, protecting colors, pulping, concentrating, homogenating, canning and sterilizing, the content of soluble solids is between 25 percent and 40 percent, and the total sugar content is lower than 65 percent. The invention has wide resources and low cost because defective bananas and pineapples are used as main raw materials, effectively and remarkably lowers the sweetness of the jam because the xylitol is adopted as a sweetener, greatly improves the jam flavor without adding any essence, has the advantages of low sugar, white color, rich nutrition, good taste, simple process, simple and convenient operation, easy control, low cost, environmental protection, easy industrialized production, and the like.