NOVELTY - Biological pesticide pleocidin microcapsule is prepared by dissolving urea in 30-40% formaldehyde solution to obtain stable urea-formaldehyde prepolymer solution; dissolving pleocidin in organic solvent and adding emulsion solution to obtain pleocidin solution; adding the urea-formaldehyde prepolymer solution in the pleocidin solution; adding dispersant solution to the obtained mixture and reacting; and cooling, filtering, and drying to obtain the pleocidin microcapsule.    USE - Method for preparing biological pesticide pleocidin microcapsule (claimed).    ADVANTAGE - The method has simple and convenient technique, easy to control operation, stable reaction, less additives, and low production cost; and is suitable for industrial production. The prepared pleocidin microcapsule has high enclosing efficiency, so it is not affected by rain water or light radiation; and it has long release period to prolong the control period of pests without causing environmental pollution.    DETAILED DESCRIPTION - Preparation of biological pesticide pleocidin microcapsule comprises:    (A) putting urea in 30-40% formaldehyde solution, where molar ratio of urea to formaldehyde is 1:1-2.5; completely stirring until the urea is completely dissolved; adjusting pH to 7-9; raising temperature to 60-80 degrees C; maintaining temperature and reacting for 0.5-1.5 hours to generate thick transparent liquid; and adding distilled water to obtain stable urea-formaldehyde prepolymer solution, where volume ratio of formaldehyde solution to distilled water is 1:1-3;    (B) preparing pleocidin solution by dissolving pleocidin in organic solvent, where solid-liquid ratio of pleocidin to organic solvent is 1 g:20-50 ml; stirring and completely dissolving the pleocidin; adding 0.5-2 wt.% of emulsion solution, where volume ratio of emulsion solution to organic solvent is 2-4:1; stirring at 1000-2000 revolutions/minute (rpm) for 10-15 minutes until the solution is clarified and forms as oil/water emulsion;    (C) adding the urea-formaldehyde prepolymer solution in the pleocidin solution at room temperature, where volume ratio of urea-formaldehyde prepolymer solution to organic solvent for dissolving the pleocidin is 1-8:1;    (D) continuously stirring the obtained mixture for 10-50 minutes at 1000-2000 rpm;    (E) dissolving the prepolymer in dispersing medium of emulsion;    (F) reducing the stirring speed to 500-900 rpm;    (G) reducing pH value of solution to 1.5-5 within 20-90 minutes; condensing for 1-3 hours;    (H) adding 0.1-1 wt.% dispersant solution, where volume ratio of the dispersant to organic solvent is 1-2.5:1;    (I) raising temperature to 40-70 degrees C;    (J) continuously preserving temperature and reacting it for 2-5 hours;    (K) stopping the reaction and adjusting the pH value of the reaction product to 6-8; and    (L) cooling, filtering, and drying to obtain the pleocidin microcapsule.