The invention discloses a method for utilizing organic selenium fertilizer to produce milk vetch tender sprouts rich in selenium, belonging to the technical field of developing vegetables and foods rich in selenium. The method is as follows: taking organic selenium fertilizer with the total use amount of 4.06-8.10 kg/hectare to blend with water according to weight proportion of 1:500 to prepare foliage fertilizer; spraying the foliage fertilizer on the foliages of astragalus smicus plants for twice, which are respectively performed 15-25 days before initial flower of milk vetch at turn green stage and 7-10 days after the first spraying; and harvesting the milk vetch tender sprouts 7-10 days after the secondary spraying. In the method, the selected organic selenium fertilizer is safe and has low cost and convenient use; the content of selenium in the produced tender sprouts can be stabilized between 115. 9-223.3 mu g/kg, and the acceptable daily intake of selenium for human body can be increased if the milk vetch tender sprouts are eaten as vegetables, thereby promoting human body health. The method is suitable for being popularized and applied in low-selenium areas.