The invention discloses activity compound leaf fertilizer special for potatoes, and belongs to the field of agricultural leaf fertilizer. The activity compound leaf fertilizer special for potatoes is composed of urea, monopotassium phosphate, potassium humate, compound micro element fertilizer, microorganism compound bacteria, compound amino acid liquid, potato stem leaf extracting solution, tartaric acid, piperonyl butoxide, polyving akohol, ethylene diamine tetraacetic acid, polyoxyethylene laurate, jasmonic acid methyl ester, thick-fruited millettia seed extract, Chinese pulsatilla root extract, Kunming caulis spatholobi root extract, subprostrate sophora root extract, chitosan and water. The activity compound leaf fertilizer special for potatoes can be absorbed by potato plants easily, the utilization rate is high, nutrient elements and physiological activators needed for the potato plants can be supplemented, physiological diseases such as a nutrient deficiency symptom can be effectively prevented and treated, the yield is increased, the quality is improved, the stress resistance is enhanced, and the auto immunity and the anti-disease and disease preventing capacity can be improved.