NOVELTY - Functional modified urea prepared by e.g. taking beans, green beans and corn functional plant, soaking via warm water, mechanically crushing and removing dregs, taking sediment, preparing into concentration via buffer solution, adding fermenting agent and then fermenting, keeping the temperature, indirectly stirring and reacting the mixture, setting flow speed through cations, exchanging pH value, peeling functional matters, concentrating and spraying via a drier to obtain urea additive, and adding soluble and natural micromolecular active organic substance, is claimed.    USE - The functional modified urea is useful for promoting crop growth.    ADVANTAGE - The functional modified urea improves quality and yield of crops, reduces labor intensity of peasant, and is eco-friendly.    DETAILED DESCRIPTION - Functional modified urea prepared by taking beans, green beans and corn functional plant, soaking via warm water, mechanically crushing and removing dregs, taking sediment, preparing into concentration via buffer solution having pH value of 6, adding fermenting agent and then fermenting, keeping the temperature, indirectly stirring and reacting the mixture, setting flow speed through cations, exchanging pH value, peeling functional matters, concentrating and spraying via a drier to obtain urea additive (micromolecular active organic substance), adding soluble and natural micromolecular active organic substance into the technology for synthesizing ordinary urea through ammonia and carbon dioxide before the high-tower granulation, diluting the micromolecular additive via warm water, setting the ratio of the urea yield per hour to the added additive amount of 0.5%, filtering the mixture and then pumping into an evaporating system through a flow meter and a metering pump, granulating into a high tower, taking sample and testing and then screening and packing, is claimed.    DESCRIPTION OF DRAWING(S) - The figure shows a flow chart of a functional modified urea (Drawing includes non-English language text).