The invention discloses a compound organic substance fertilizer for tea trees, which is characterized by comprising the following substances in parts by weight: 20-30 parts of biogas residue, 25-30 parts of weathered coal, 15-30 parts of bamboo charcoal powder, 0.0001 part of photosynthetic bacterium powder, 0.0001 part of arbuscular mycorrhizal fungus powder, 0.0001 part of Bacillus licheniformis powder, 25-30 parts of duck manure, 15-20 parts of cotton straw powder, 25-30 parts of oil seed straw powder, 15-20 parts of geese manure, 15-20 parts of sarcandra glabra, 3-6 parts of Cortex Fraxini, 3-5 parts of stemona, 11-20 parts of potassium sulfate, 10-20 parts of wheat straw powder, 12-15 parts of peanut straw powder, 15-19 parts of mung bean straw powder, 1-3 parts of humic acid, 0.1-0.3 part of amino acid, 0.3-0.6 part of chitosan, 15-20 parts of peanut cake, 4-8 parts of sodium aluminum phosphate and 2-5 parts of meerschaum. The fertilizer disclosed by the invention is reasonable in composition, balanced in nutrition, safe and pollution-free, completely satisfies long-term and short-term nutrient demands of tea trees, can balance fertilizer application, soil improvement and environment protection, and can effectively increase the output and quality of tea.