The biological method uses microbial fermentation technology to produce fermented feed, which generally takes a long period and requires strain selection and management, which is more complicated. In 2002, China invented the patent CN02 1554 17. X applied by Chen Jianle discloses a method for producing high-calcium multi-dimensional yeast protein feed by using kitchen waste. The kitchen waste and swill raw materials which are crushed, dehydrated, neutralized and sterilized by a crusher are mixed, inoculated with yeast and microbial strains, mixed and controlled by a flow controller, and then solid fermentation is carried out in batches under the control of a computer, followed by drying, crushing, inspection and packaging. The physical method is to dehydrate, dry and disinfect the kitchen waste, and make it into dry feed after crushing. China invention patent CN98 103203.6 applied by Zhang Zai 1998 discloses a method for recycling kitchen waste into livestock feed or agricultural organic fertilizer. The collected kitchen waste can be directly made into semi-finished products in one operation, and then sent to a batch of waiting tanks after source classification, crushing, formula measurement and dehydration, and then sent to a horizontal stirring tank for cooking, sterilization, fermentation or drying. When it is used to make feed, the kitchen waste mixed according to the formula in the metering barrel is sent to a horizontal stirring tank, stirred, cooked and sterilized at the temperature of 100℃ ~ 150℃, and then sent to a dehydrator for dehydration to a proper water content and then sent to a tank to be prepared; Then, that dehydrate kitchen waste is sent to a horizontal stirring tank through a batch of wait tanks, stirred and dried at the temperature of120 DEG C-150 DEG C, and a prop amount of grease and other nutrients are metered in from the grease storage tank and the additive storage tank according to the formula until the moisture drops to the specification requirements, so as to prepare a semi-finished product, and the semi-finished product is sent to a feed storage tank; Finally, the semi-finished products are made into granular or powdery fish, poultry and livestock feed or agricultural organic fertilizer by granulator or pulverizer as needed.