The invention discloses a production technology of thermal sweat-discharge double-sided flannelette. The production technology comprises the following steps of product design, spooling, warping, slashing, threading, weaving and post-finishing. According to the technology, the ratio of functional fibers in a fabric is reasonably configured according to functions and application of the fabric, function requirements of the fabric are considered, and the comfort degree and shape preservation property of the fabric are also considered. On the premise that the function requirements can be met, somecommon fibers are used, so that the price of the fabric is reduced, and the comfort degree and fashionability of the fabric are improved. According to the thermal double-sided flannelette, the proportion of the moisture-conducting and sweat-discharge fibers in the fabric is 14%, the proportion of the thermal fibers in the fabric is 21%, and the proportion of the cotton fibers is 65%. Due to the proportions of the fibers, moisture absorption and sweat discharge functions, heat preservation function, comfort degree and fashionability of the fabric are highly balanced, and the flannelette is a high-grade thermal underwear fabric used in spring and winter.