The invention relates to the field of agriculture, and particularly discloses nutritional soil specially for planting potatoes. The nutritional soil comprises the following components in parts by weight: 30 to 50 parts of peat, 20 to 30 parts of coconut chaff, 10 to 20 parts of perlite, 5 to 15 parts of gravels, 3 to 8 parts of a controlled release fertilizer, 5 to 8 parts of pine needle, 4 to 10 parts of sawdust, 5 to 13 parts of bone meal, 4 to 10 parts of rice chaff ash and 40 to 80 parts of barnyard manure. The prepared nutritional soil is suitable for planting potato seedlings, loose, aerated and high in moisture and fertilizer retention capability, and contains multiple mineral nutrients; the peat in the nutritional soil can enhance biological performance, is nutrient-rich and high in organic matter, humic acid and nutritional component content, and serves as a culture substrate as well as a good soil conditioner; by the barnyard manure, plant nutrients can be provided, comprising inorganic nutrients such as necessary macroelements including nitrogen, phosphorus, potassium, calcium, magnesium and sulfur and trace elements including iron, manganese, boron, zinc, molybdenum and copper; due to organic nutrients such as amino acid, amide and nucleic acid and active substances such as vitamins B1 and B6, the nutrients are kept relatively balanced.