The present invention discloses a locally-produced sweet sauce production method, and belongs to the field of seasoning production, wherein locally-produced high-quality wheat, koji essence, salt and water are adopted as raw materials, and koji producing, fermentation, extraction and other processes are performed to obtain the sweet sauce. According to the present invention, the price of the wheat is 25% lower than the price of the flour, the salt consumption can be reduced by about 20%, the fermentation time is shortened by 30 days compared with the the fermentation time of a method using flour for fermentation, the quality is good, the primary extraction amino acid-state nitrogen obtained through fermentation with flour is about 0.4% while the primary extraction amino acid-state nitrogen obtained through fermentation with wheat kernel is more than or equal to 0.6%, the taste is good, and the salt consumption is high and the product flavor is not good when the fermentation is performed with flour.