NOVELTY - Fertilizing selenium-enriched medlar comprises applying fertilizing (farm fertilizer comprising cattle manure and chicken manure) in a planting hole in early February, top-dressing for the first time in early April when multiple branches appear, applying solid ammonium phosphate fertilizer along the root outer edge within the open ditch, second time top dressing in early May during fruiting and flowering, applying fertilizer (nitrogen phosphorus potassium), third time top dressing in early June, applying selenium-enriched fertilizer and fertilizing in Autumn.    USE - The method is useful for fertilizing selenium-enriched medlar (claimed).    ADVANTAGE - The method: satisfies the nutrient requirement of fruit; increases selenium content in fruit; and is economical.    DETAILED DESCRIPTION - Fertilizing selenium-enriched medlar comprises applying fertilizing in a planting hole in early February, where the fertilizer is farm fertilizer comprising cattle manure and chicken manure in a weight ratio of 1:1, top-dressing for the first time in early April, when multiple branches appear, applying fertilizer along the root outer edge within the open ditch, selecting solid ammonium phosphate fertilizer, planting with deep groove distance from tree trunk of 30-35 cm, a groove width of 5-10 cm and depth of 10-15 cm, second time top dressing in early May, during fruiting and flowering time, applying the fertilizer along the root outer edge within the open ditch, where the fertilizer is liquid fertilizer having nitrogen phosphorus potassium in a ratio of 1:2:1, with deep groove distance from tree trunk of 30-40 cm, a groove width of 5-10 cm and depth of 15-20 cm, third time top dressing in early June, during fruiting node generating time, applying the fertilizer along the root outer edge within the open ditch, where the fertilizer is selenium-enriched fertilizer, with deep groove distance from tree trunk of 40-45 cm, a groove width of 5-10 cm and depth of 20-25 cm, fertilizing in Autumn in early October, during the end of the fruit harvesting, applying the fertilizer along the root outer edge within the open ditch, with the fertilizer first and third fertilizer in a ratio of 5:1, with deep groove distance from tree trunk of 45-50 cm, a groove width of 5-10 cm and depth of 25-30 cm.