NOVELTY - Environmentally friendly effective-microorganism microbial agent fermented complex fertilizer composition comprises 40-45 pts. urea, 23-25 pts. monoammonium phosphate, 30-34 pts. calcium superphosphate, 4-5 pts. chitosan, 12-14 pts. attapulgite powder, 8-10 pts. humic acid, 20-23 pts. dry leaves, 10-12 pts. straw, 10-12 pts. ammonium sulfate, 20-23 pts. potassium dihydrogen phosphate, 2-3 pts. magnesium sulfate, 3-4 pts. effective-microorganism microbial agent and 4-6 pts. coating agent e.g. hydroxyethyl methacrylate, trimethylolpropane triacrylate, silane coupling agent and jade powder.    USE - The complex fertilizer composition is useful for watermelon (claimed).    ADVANTAGE - The composition is environmentally friendly, less harmful to soil and improves the yield and quality of watermelon.    DETAILED DESCRIPTION - Environmentally friendly effective-microorganism microbial agent fermented complex fertilizer composition comprises 40-45 pts. urea, 23-25 pts. monoammonium phosphate, 30-34 pts. calcium superphosphate, 4-5 pts. chitosan, 12-14 pts. attapulgite powder, 8-10 pts. humic acid, 20-23 pts. dry leaves, 10-12 pts. straw, 10-12 pts. ammonium sulfate, 20-23 pts. potassium dihydrogen phosphate, 2-3 pts. magnesium sulfate, 3-4 pts. effective-microorganism microbial agent and 4-6 pts. coating agent including 30-35 pts. hydroxyethyl methacrylate, 10-15 pts. trimethylolpropane triacrylate, 2-3 pts. silane coupling agent KH-570, 1-2 pts. nanocarbon and 2-3 pts. jade powder, where the coating agent is prepared by mixing all raw materials, grinding and dispersing uniformly. An INDEPENDENT CLAIM is also included for manufacturing complex fertilizer composition, comprising: (i) crushing withered dried leaves and straw, adding effective-microorganism microbial agent and proper amount of water, uniformly stirring, stacking to ferment for 6-8 days by turning once for every 2-3 days until the fermentation material is completely decomposed; (ii) adding remaining raw materials into the fermented material except coating agent, and stirring uniformly; and (iii) heating the mixed material to 80-90 degrees C, adding coating agent, stirring and granulating.