The invention discloses a method for industrially producing silicate phosphate from rice husk carbon, which comprises the following steps of: smoldering and carbonizing rice husks to obtain rice husk carbon; performing acid digestion or acid firing on the rice husk carbon to obtain initial activated carbon; and performing dustproof and explosion-proof sealed packaging treatment on the initial activated carbon, and performing intermediate temperature, sub-high temperature and high temperature activation to finally prepare high-quality silicate phosphate and activated carbon. The method overcomes the defect of low yield of silicate phosphate prepared from the rice husk carbon in the prior art. The process method has the advantages of simpleness, reasonableness, convenient operation and highseparation rate of carbon and silicon elements from the rice husk carbon, overcomes the technical barrier of intermediate and high temperature activation of the rice husk carbon, can directly producethe high-quality silicate phosphate and activated carbon from the rice husk carbon, effectively improves the economical and social benefits of the rice husks, can realize the concept of conservation,low carbon and economy, and provides a new way for agricultural industrialization.