The invention discloses an efficient compound foliar fertilizer which consists of the following raw materials in part by weight: 20-30 parts of soybean meal, 10-20 parts of alga, 10-20 parts of a chelating agent, 1-5 parts of compound amino acids, 5-10 parts of a surfactant, 5-10 parts of a bacteria-containing yeast organic raw material, 1-3 parts of boric acid, 1-3 parts of ammonium molybdate, 1-5 parts of urea, 1-5 parts of monopotassium phosphate, 1-3 parts of potassium humate and 0.1-2 parts of microelements. The efficient compound foliar fertilizer disclosed by the invention can quickly supply crop nutrients, relieve the phenomenon of nutrient deficiency caused by crop root aging, low absorptive capacity, nutrient deficiency symptom or difficult operation and control of soil fertilization conditions and improve the nutrient utilization rate.