The invention discloses a greenhouse strawberry fertilizing method which is characterized by comprising: in different growth stages of strawberry, using a leaf surface spraying mode or a mode of combining leaf surface spraying with washing and spraying roots, complementing nutrient components (especially calcium, magnesium, iron, zinc, manganese, boron, copper, molybdenum and the like) required in each growth stage for the strawberry by using a fruit water-soluble fertilizer, root-promoting sweetening liquid, a flower water-soluble fertilizer, a boron water-soluble fertilizer, a high-potassium washing fertilizer, a greening water-soluble fertilizer, a covering water-soluble fertilizer, a fruit reddening water-soluble fertilizer, a root calcium water-soluble fertilizer and a leaf-preserving washing magnesium water-soluble fertilizer, and combining with a traditional root-fertilized organic fertilizer, a nitrogen fertilizer, a phosphatic fertilizer, a potassic fertilizer and a compound fertilizer, so that the strawberry can absorb the needed nutrient components in each growth stage rapidly and sufficiently, nutrient balance can be maintained, the normal growth of roots, flowers, fruits and the like of the strawberry can be ensured, the yield and quality of the strawberry fruits can be improved, and the method is available for orchard workers to increase production and income.