The invention provides a production method of grain-fruit mature vinegar and provides a kind of grain-fruit vinegar with light flavor. The production method comprises the following steps: grinding raw materials, adding distiller's yeast to stir, performing alcoholic fermentation, performing acetic acid fermentation, perform the smoking solid-substrate fermentation technology, aging to obtain liquid vinegar and processing the liquid vinegar through the powder injection process to obtain vinegar powder, wherein the raw materials contain grain raw material and fruit raw material accounting for 40%-60% of the grain raw material, the grain raw material is one of sorghum and corn or a combination of sorghum and corn which are mixed randomly; during the step of adding distiller's yeast, multiple microbial strain starter accounting for 40% of the raw materials are added, the multiple microbial strain starter comprises 20% of red starter, 20% of koji, 55% of bran-koji and 5% of glucoamylase; the fermentation temperature of alcohol is 30-35 DEG C; the fermentation temperature of acetic acid is 40-45 DEG C; and the smoking solid-substrate fermentation technology is performed at 70-90 DEG C for five days. The grain-fruit vinegar is the mature vinegar with light flavor and has obvious fruit fragrance and the light fragrance of preservation and ester fragrance of the mature vinegar.