The invention provides three yellow double flower bag tea, comprising the following raw materials, by weight, 10- 18 parts of rhubarb, 6- 10 parts of rhizoma coptidis, 5- 9 parts of baical skullcap root, 15- 30 parts of honeysuckle, 12- 25 parts of wild chrysanthemum flower, 10- 18 parts of dwarf lilyturf tuber, 8- 12 parts of caulis dendrobii, 8- 12 parts of radix rehmanniae, and 6- 9 parts of green tea. The invention also provides a method for preparing the three yellow double flower bag tea. The tea is clever in collocation with a reasonable component, provides tea drink for sore gums and bleeding gums crowd with the functions of nourishing yin and generating body fluid, moistening lung and clearing away the heart-fire, detumescence by detoxification, and can alleviate a toothache and gum bleeding. Based on green tea and Chinese herbal medicine, the tea selects the pure natural plant as raw material of medicine and food homology, with a scientific formula, and the products after modern biological technology to process, has an obvious effect, packed with consumption filtering paper bag, easy to be used, without side effects after long-term taking.