A method for producing a biomagnetic serum site filler for high ammonia nitrogen wastewater treatment that satisfies wastewater discharge standards is provided. After activating the magnetic powder, it is mixed with ceramite, borax and titanium dioxide in a certain ratio, then mixed with water, granulated, dried, fired, washed, dried again, Magnetized to obtain a magnetic serum site filler substrate, and after loading a surface layer material consisting of charcoal, clay, neodymium iron boron and water on the surface of the magnetic serum site filler substrate, secondary drying and firing, and cooling. After that, a biomagnetic serum site filler is obtained. The biomagnetic serum site filler produced by the present invention can greatly improve the removal efficiency of ammonia nitrogen, which is useful for promotion and application in actual biological treatment of sewage. [Selection figure] None
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