The invention discloses pomelo tea and a preparation method thereof, and the pomelo tea comprises the following components by weight: 1200g-1800g of honey pomelo, 300g-400g of honey and 600-800g of oolong. The pomelo tea is developed through years on the basis of the traditional tea manufacturing method, pomelo juice, the honey and other components are added, and the pomelo tea is successfully prepared from loading raw materials which are well fermented twice into a container made of pomelo peel, then covering a cover, locking and shaping through a model made of a thin iron sheet, finally placing into a baking machine, baking through slow fire and taking out when a housing of pomelo tea is hard. Therefore, the product according to the invention has the effects of promoting the production of body fluid, quenching thirst, refreshing, invigorating spleen and stomach, clearing heat, removing toxin, reducing fire, promoting urination, depressing qi, reducing phlegm, regulating qi, stopping asthma, reducing weight, preventing fat, cooling blood and lubricating bowel, the long-term consumption of the pomelo tea can prevent high blood pressure and hyperlipoidemia, and the pomelo tea also has great auxiliary efficacy for chronic cough and indigestion, as well as phlegmatic symptom, sore throat and other symptoms caused by long-term smoking of men.