The invention relates to a method for preparing beverage with shaddock, comprising following steps: washing shaddock, removing epidermis or not, getting rid of rotten part, separating pulp from peel, washing peel; cutting peel, grinding, controlling temperature and adding proper amount of acid, stirring, adding enzyme to get peel enzyme reacting solution; beating pulp, removing seed and getting pulp slurry, adding proper amount of acid, stirring, adding enzyme to get pulp slurry enzyme reacting solution; mixing peel slurry with pulp slurry enzyme reacting solution, adding gel, sour addictive,sweetener, soluble edible fiber and vitamin C, heating for dissolution, stirring evenly, heating to a certain temperature, loading, sealing, disinfecting, cooling, packing and getting final product. The invention makes full use of whole shaddock, avoids wasting raw material, the production process is reasonable and cost is low and the sour taste of product is proper.