The invention discloses a potato nutrient solution formula, which comprises 395-440 mg / L of urea, 560-620 mg / L of diammonium phosphate, 410-470 mg / L of potassium dihydrogen phosphate and 660-660 mg / L of potassium sulfate in terms of dosage and parts. 720 mg / L, magnesium sulfate 480‑530 mg / L, EDTA iron sodium salt 5‑9 mg / L, manganese sulfate 1.5‑3 mg / L, zinc sulfate 1.2‑2mg / L, boric acid 2‑2.8 mg / L, copper sulfate 0.1‑0.4 mg / L, sodium molybdate 0.1‑0.35 mg / L. The formula of the present invention is reasonable, comprehensively utilizes urea, diammonium phosphate, potassium dihydrogen phosphate, potassium sulfate, magnesium sulfate, iron sodium salt of edetate, manganese sulfate, zinc sulfate, boric acid, copper sulfate, and sodium molybdate to improve nutrition The utilization of the liquid components, fully matching the nutrients in the formula, is suitable for the growth of potatoes, and the mutual cooperation of each component in the formula can meet the nutrients required for the growth of potatoes, and by adjusting the proportion of each component in the nutrient solution , so that it can be well matched with the growth needs of potatoes, and can be well matched with the growth of potatoes.