The invention relates to a production technology of Chinese medicinal herbal health fermented beancurd. The preparation method comprises the following steps of: 1) immersing; 2) grinding; 3) filtering; 4) cooking; 5) curdling; 6) culturing uncongealed beancurd; 7) squeezing and slicing; 8) performing early fermentation; 9) preparing the following Chinese medicinal herbal raw materials in 150kg of beancurd raw body by weight: 100g of pepper, 150g of liquorice, 120g of anise, 120g of cinnamon, 100g of medlar, 150g of cumin, 100g of tsaoko amomum fruit, 100g of cardamom, 100g of esmodium, 150g of fructus amomi, 100g of schisandra chinensis, 100g of dried tangerine peel, 150g of mangnolia officinalis, 150g of dogwood, 150g of radix salviae miltiorrhizae, and 100g of galangal, mixing and grinding into fine powder for later use; 10) pickling fermentation materials in later stage of preparation; and 11) stirring and filling into a pot for later fermentation. The beancurd is naturally fermented and brewed, prepared form Chinese medicinal herbs, can be darker and mellower when the preservation period is longer, and has the advantages of unique flavor, rich nutrition, strong color and smell, stomach-invigoration and long-lasting aftertastes, and has more local characteristics of Hunan flavor.