The invention relates to the technical field of fruit planting, specifically to a planting method for selenium-rich mango. The planting method comprises the following steps: 1) soil preparation and field planting; 2) fertilizer application: a step of spraying a selenium-rich foliar fertilizer every 21 to 31 days from the beginning of fruiting to fruit harvesting of a mango tree, and additionally applying a fruit strengthening fertilizer to soil until fruits are harvested, wherein the selenium-rich foliar fertilizer is mainly prepared from raw materials like Cardamine, kudzuvine root, Banqiao Codonopsis pilosulc, marjoram, Purplu Basil, garlic, sundew, sodium selenite, selenium-rich edible fungus powder, paclobutrazol, ethylene and a microbial agent; and the fruit strengthening fertilizer is mainly prepared from raw materials like decomposed farmyard manure, potassium chloride, urea, a potassium-calcium-magnesium-phosphorus fertilizer, potassium dihydrogen phosphate, realgar, pannyroyalmint, rosemary and sage; and 3) orchard management. The planting method provided by the invention has the following advantages: the harm of the residual amount of a pesticide to the human body and the environment is effectively reduced; the yield per mu and the average selenium content of mango are improved; nutrients are rich; fruit pulp is fragrant, sweet and delicious; fruits are large; fruitpeel is thin; thus, economic benefits of the mango are increased.