NOVELTY - Production of organic-inorganic complex fertilizer using duck feces comprises uniformly mixing duck feces with dry straw powder or rice chaff and regulating water content, carbon to nitrogen ratio and pH; uniformly inoculating culture medium fermentation agent into mixed material and performing aerobic fermentation; ending aging of compost; stacking compost, fermenting, diffusing water in compost, crushing fermented material and setting aside; adding large and intermediate microelement chemical fertilizer and fertilizer regulator or growth regulator, and pelletizing.    USE - Production of organic-inorganic complex fertilizer using duck feces for grain crops, vegetable crops and fruit trees (claimed).    ADVANTAGE - The method is simple. The produced fertilizer is flexible, and has high applicability and yield increasing effect.    DETAILED DESCRIPTION - Production of organic-inorganic complex fertilizer using duck feces comprises:    (A) uniformly mixing duck feces with dry straw powder or rice chaff at ratio of 4-6:3, and regulating water content at 50-60%, carbon to nitrogen ratio at 25-30:1, and pH at 7.5-8.0;    (B) uniformly inoculating 0.2% culture medium fermentation agent into mixed material, and performing aerobic fermentation at 45-65 degrees C for 7-10 days with oxygen supplied at 0.1-0.2 m3/minute to age compost, where material is shaken after 36 hours and every after 24 hours;    (C) ending aging of compost when temperature of compost is reduced to 38-42 degrees C, carbon to nitrogen ratio is decreased to 16-20:1 and pH is reduced to 6.0-7.0;    (D) stacking compost, fermenting at 35-42 degrees C for 7-10 days, diffusing water in compost to make the water content less than 40%, crushing fermented material and setting aside;    (E) adding large and intermediate microelement chemical fertilizer and fertilizer regulator or growth regulator based on characteristics and growth need of crops into fermented material, and pelletizing to produce organic-inorganic complex fertilizer.