Title: fermentation tank vibration transmission mechanism design Abstract: With the social development, and resource utilization has caused considerable Fermentation tank vibration mechanism is to straw as a carbon source for microbiological fermentation of solid substrate on the upper reaches of the equipment required, use mechanical movement principle, design fermentation, and to imitate cattle or other animals, the mechanism of gastric digestion of food, design fermentation tank vibration mechanical devices, through the crank, sprocket and bevel gear mechanical transmission mode of vibration, in order to realize biomimetic motility feed cattle organ that urge change in the With straw as a carbon source on the fermentation of raw materials, so that microbes with straw substrate mix and reduce low energy consumption, required to produce the fermentation Key words: fermentation tank bionic mechanical transmission vibration mechanism