The invention discloses a tea coffee beverage bag and a preparation process thereof. The tea coffee beverage bag comprises the following components in parts by weight: 100-120 parts of coffee powder,20-30 parts of lemongrass powder, 10-15 parts of Pu'er tea powder, 12-18 parts of dried longan, 10-15 parts of dried roxburgh rose, 10-20 parts of sweet osmanthus, 10-15 parts of honeysuckles, 5-10 parts of chamomile, 8-12 parts of jasmine, and 5-8 parts of passion fruits. The process uses flowers and fruits as a tea part which is mixed with coffee, the natural sugar in the flowers and fruits canrelieve the bitter taste of the coffee, the flowers and fruits are good in taste and beneficial to the health of the body. The coffee is mixed with the flowers and fruits, so that the concentration ofthe coffee is reduced to a certain extent, and long-term consumption of the beverage has little harm to the human body in that the concentration of the coffee is low.