A biochar feed additive and the method manufacturing same

The present invention provides an biochar feed additive, comprising: an biochar feed additive mixed with an biochar feed additive; wherein the biochar feed additive, comprising: a negative-carbon material mixed with an adjustment substance; wherein, the negative-carbon material is a solid substance generated by a microwave pyrolysis process of agricultural waste. The adjusting substance is selected from one of microorganisms, enzymes, preservatives, antioxidants, iodinated proteins, acidity regulators and quality enhancers. The present invention further provides a manufacturing method of the biochar feed additive. With the biochar feed additive and its manufacturing method of the present invention, the biochar feed additive has a large number of micron-scale pores, which provide for the growth and reproduction of microorganisms, promote beneficial flora, and then contribute to the nutrients of biochar feed additive, and then reduce the forming of aldehyde emitted by animals after eating.