The invention relates to the technical field of beverage processing, in particular to a brown sugar beverage and a processing method thereof. The brown sugar beverage is prepared from the following raw materials in parts by weight: 60 to 67 parts of Xuehua pear, 13 to 17 parts of brown sugar, 8 to 13 parts of roxburgh rose, 3 to 5 parts of red beans, 3 to 5 parts of mung beans, 3 to 7 parts of asparagus, 1 to 3 parts of soybean peptides, 0.5 to 0.8 part of sodium alginate and 0.3 to 0.5 part of sodium carboxymethylcellulose. In the processing process, the Xuehua pear, the brown sugar and the asparagus are used as major processing raw materials; the characteristics that the cold property of the Xuehua pear and the warm property of the brown sugar are used; then, the nutrition substances andtrace elements richly contained in the asparagus are matched; the Xuehua pear, the brown sugar and asparagus are organically combined to achieve the complementary cooperated effects; the lung moisturizing and cough relieving effects of the Xuehua pear can be effectively improved; the physiological metabolism functions of the human body can be effectively regulated.