The invention discloses a fermenting 
bed rich in Chinese herbal medicines and a preparation method thereof. The fermenting 
bed comprises a fermenting 
bed padding and a fermenting bed microbial inoculum, wherein the fermenting bed padding is prepared from 4-6 kg / m<3> of wet bean dregs, 1.5-2.5 kg / m<3> of 
corn flour mushroom residue, 2-3 kg / m<3> of corn stigma, 1-2 kg / m<3> of sweet potato leaves, 0.7-1.0 kg / m<3> of 
gynura bicolor, 0.5-0.7 kg / m<3> of 
ramie root, 0.8-1.2 kg / m<3> of 
green tea powder, 1.4-1.6 kg / m<3> of lonicera 
japonica, 0.8-1.0 kg / m<3> of Chinese yam, 0.3-0.5 kg / m<3> of 
cistanche deserticola, 0.1-0.3 kg / m<3> of 
honeysuckle flower, 0.25-0.35kg / m<3> of hiraute 
shiny bugleweed herb and 0.6-0.8 kg / m<3> of dutchmanspipe 
vine; and the fermenting bed microbial inoculum refers to EM (Effective Microorganisms), and the dosage is 200-250 g / m<3>. The formula is reasonable; dry 
rice straw is paved on the bottom layer of the fermenting bed, so that the padding thickness of the fermenting bed can be reduced; the fermenting bed is environment-friendly; moreover, the temperature of the fermenting bed can be effectively maintained; a plurality of Chinese herbal medicines are added into the formula, so that excrement of pigs can be disinfected, and meanwhile, the multiplication of 
beneficial bacteria in the enteric canals of pigs can be facilitated, therefore the growth of the pigs are promoted; zymophyte refers to EM which is easy to obtain, and is low in cost; and meanwhile, modified 
straw powder is added into the formula, so that the excrement is adsorbed.