The invention discloses fulvic acid leaf fertilizer, which belongs to the technical field of fertilizer. The fulvic acid leaf fertilizer is prepared from the following raw materials in parts by weight: 8 to 80 parts of fulvic acid, 5 to 10 parts of polyaspartic acid, 2 to 10 parts of micro fertilizer, and 0.05 to 1 part of biological surfactant. By adding the biological surfactant and the polyaspartic acid, the surface tension on the leaf can be effectively reduced, the utilization rate of water-soluble fertilizer can be increased, the absorption of the plant leaves for nutrients and the growth of roots can be facilitated, plants can be strengthened, the stress resistance can be improved, and an effect of deep roots, flourishing leaves and high quality can be achieved.