The invention discloses a high-nitrogen urea-based compound fertilizer produced by a mixed method. The high-nitrogen urea-based compound fertilizer is prepared from urea, ammonium chloride, monoammonium phosphate, potassium chloride, ammonium bicarbonate and packing. The high-nitrogen urea-based compound fertilizer has the advantages that the urea-based compound fertilizer is produced by the mixed method, so that the dosage of the urea is reduced; the urea does not need to be molten; power consumption, cost of materials, and equipment running cost are reduced; generation of biuret is greatly reduced at the same time; the environment and the crop growth are protected; and the product is qualified in quality, good in appearance quality and simple in processing technology, and can be pelletized by steam after the materials are mixed.