The invention provides a self-blended beverage composition. The self-blended beverage composition comprises a blending assembly and aqueous-based liquid, wherein the blending assembly and the aqueous-based liquid are respectively and independently packed and stored in the same packing box, packing bag or packing bottle at the same time, or fixed in a sticking manner, fixed by a label, or fixed together by a packing kit; and the ratio by weight of the aqueous-based liquid to the blending assembly is 2 to 1, and the aqueous-based liquid comprises water or liquid of which the water content is greater than 65%. The invention further provides a dual-blended beverage composition comprising a blending assembly A, a blending assembly B and the aqueous-based liquid. The self-blended beverage composition disclosed by the invention effectively solves the problems that a conventional beverage is poor in stability and freshness caused by storage after dilution with water, and the stability and thesafety of products are greatly improved. In addition, the consumers participate in the making process of the beverage, food and drink mood is optimized, selectivity for appropriately adding the blending assembly according to requirements of people can be provided for consumers, and requirements for individual beverages are met.