NOVELTY - Process for producing photosynthetic bacterium bio-fertilizer by sewage from stock farm comprises: (1) carrying out anaerobic fermentation, separating solid and liquid; (2) culturing photosynthetic bacterium, inoculating photosynthetic bacterium, adding sodium acetate solution, culturing with light; (3) production of composite microbe fertilizer: adding Azotobacter, phosphorus and potassium bacteria, culturing; and (4) production of photosynthetic bacterium bio-fertilizer: dissolving sulfates and boric acid in warm water, adding into composite microbe fertilizer and mixing.    USE - Process for the production of photosynthetic bacterium bio-fertilizer by sewage from stock farm, which is used for rice, vegetable and fruit tree.    ADVANTAGE - Production of photosynthetic bacterium bio-fertilizer by sewage from stock farm has simple technique, low equipment cost, forms product with high added value, solves environmental pollution caused by sewage from stock farm. The product can promote growth of crop, and increase quality and output of crop.    DETAILED DESCRIPTION - Process for producing photosynthetic bacterium bio-fertilizer by sewage from stock farm comprises: (1) pre-treatment: putting (pts.wt.) sewage (1) in fermentation pool, carrying out anaerobic fermentation for 48-72 hours, separating solid and liquid, which forms supernatant fluid (0.76-0.84); (2) culturing photosynthetic bacterium, inoculating photosynthetic bacterium (0.19-0.21) in the supernatant fluid, adding sodium acetate solution (0.006) which includes sodium acetate (0.001), culturing at 20-30 degrees C with 10001-30001 x light for 7-10 days, which forms photosynthetic bacterium liquid fertilizer (0.956-1.056); where density of photosynthetic bacterium is greater than or equal to 108 most probable number (MPN)/ml; (3) production of composite microbe fertilizer: adding Azotobacter, phosphorus bacteria, potassium bacteria in the photosynthetic bacterium liquid fertilizer, where pts.wt. of each bacteria is 0.019-0.021, culturing at 20-30 degrees C for 2-3 days, which forms composite microbe fertilizer (1.013-1.119); and (4) production of photosynthetic bacterium bio-fertilizer: dissolving zinc sulfate, copper sulfate, iron sulfate, manganese sulfate and boric acid (0.002) in warm water (0.01), adding the solutions into the composite microbe fertilizer, mixing uniformly, which forms photosynthetic bacterium bio-fertilizer (1.073-1.179).    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic diagram of the process for the production of photosynthetic bacterium bio-fertilizer by sewage from stock farm (Drawing includes non-English language text).