The invention belongs to the technical field of agricultural fertilizer and relates to a special foliar fertilizer for rice. The special foliar fertilizer comprises a first-stage fertilizer for the vegetative stage of rice and a second-stage fertilizer for the reproductive stage of rice, wherein the second-stage fertilizer comprises a flowering-stage fertilizer applied in the flowering stage and a filling fertilizer applied in the filling stage; and the flowering-stage fertilizer comprises the following components in parts by weight: 35-50 parts of biogas slurry, 10-22 parts of microcrystalline cellulose, 7-12 parts of aloe extract, 1-5 parts of sucrose, 16-25 parts of chitin and 1-2 parts of auxiliary. In the invention, different foliar fertilizers are prepared for the vegetative growth and reproductive growth of rice, and each stage in the rice growth can be fully utilized to increase the rice yield; particularly by utilizing the flowering stage and the filling stage, the flowering period is prolonged, the pollination success rate is increased, the filling is accelerated, the filling rate is increased, and the particle fullness is remarkably improved; and moreover, the absorption effect of the foliar fertilizer is good, the dosage is small, and the cost is saved.