The invention provides a water and fertilizer integration management method for strawberry plants. A slow-release fertilizer is dissolved in water and undergoes irrigation fertilization, and the obtained solution is irrigated once in the seedling stage, twice in the squaring stage and once in the fruit expanding stage. The slow release fertilizer is prepared from sodium alginate, Arabic gum, plant starch, lignin, humic acid, probiotics, ammonium sulfate, calcium superphosphate, potassium sulfate, magnesium sulfate, chelated iron, manganese chloride, boric acid, zinc sulfate and copper sulfate. The management method can increase the yield of the strawberries, prolong the picking cycle and significantly improve the conditions of gray mold, powdery mildew and anthracnose.