Abstract: The aim of the study was to control the growth of mucor, parasites, Escherichia coli and S.aureus in cusions of fermentation bed,so selecting dozens of Chinese herbal medicines and chemical pharmaceuticals to start bacteriostasis experiment in vitro. The results showed that all hemical pharmaceuticals have different level controlling effects on one or severals of beneficial bacterials in cusions; Dandelion, Herbahouttuyniae, Herba Artemisiae Scopariae, Cortex Fraxini, Folium Isatidis, Herba Epimedii, Artemisia Annua, Andrographitis Paniculata, Solanum Nigrum, Macleaya Cordata, Euphorbia Humifusa have no controlling effects on beneficial bacterials in cusions,and but have certain controlling effects on Escherichia coli and S.aureus. Calcium propionate has no controlling effects on beneficial bacterials,but has significant controlling effects on mucor. Calcium Propionate and Cortex Pseudolaricis has no controlling effects on beneficial bacterials,so they will be anthelminthic drugs in cusons.

Key words: fermentation bed; Chinese herbal medicine; chemical pharmaceutical; bacteriostasis in vitro 