The invention discloses a low starch waste distiller's grain brewed Chinese liquor and a brewing method thereof. The method includes the steps of: (1) crushing sorghum, conducting moistening with water, and then steaming the sorghum thoroughly; (2) mixing yellow water, end liquor, pot-bottom water, composite caproic acid bacteria liquid, esterified red yeast rice, medium-high temperature Daqu, and pit mud evenly, and conducting fermentation to prepare esterified liquid; (3) spreading sorghum for cooling, mixing the sorghum with medium-high temperature Daqu evenly, spraying a small amount of esterified liquid before adding the mixture into a fermentation pool, and starting fermentation; (4) taking the yellow water out from the fermentation pool, and pouring it all into the bottom of a retort, putting fermented grains to the retort for distillation, and taking the end liquor for standby use; (5) taking the distiller's grains after distillation, and performing spreading for cooling, adding medium-high temperature Daqu and distiller's yeast, mixing the substances evenly, performing piling, spraying a small amount of esterified liquid before adding the mixture into the fermentation pool, and starting fermentation; and (6) pouring the rest esterified liquid and the end liquor of step (4) into pot bottom, and putting the fermented grains into the retort for steaming. The method provided by the invention utilizes fermentation garbage waste distiller's grain with very low starch content to brew Chinese liquor, has high resource utilization rate and saves grains, and the liquor has excellent quality.