The present invention relates to a formulation of biscuit with the function of immunity enhancement and a method for making same. The medicament ingredients include longan aril, coix seed, medlar and sealwort. The preparing method of the invention includes the steps of: producing the extract by aqueous extracting, taking the extract, wheat flour, sugar (unessential), grease, dairy food and egg as principal raw material, adding emulsifier, raising agent, modifying agent and other auxiliary materials, and producing the biscuit through mixing, molding, baking, cooling, or sandwiching, coating, and finally packaging. The present invention has reasonable formulation, advanced and feasible technics, good taste of the biscuit production, and is suitable for the daily use of people with the need to enhance the immunity.