After treating by septic tank, domestic sewage is usually still polluted. Pollutant composition is mainly organic matter, especially organic compounds containing nitrogen and NH4 +. Research on domestic sewage treatment using Moving Bed Biological Reactor MBBR were conducted to improve the removal efficiency of BODs, COD and nitrogen. Pilot model was carried out on laboratory with reactor having 100 liter capacity. Plastic media has l0 x 10 mm in size, 1.200 m2/ m3 in specific surface, 85 percent in porosity, 1.2 kg/m3 in density. The process which fixed bio membrane to medium was conducted in 48 hours then they were put in to reactor with activated sludge in the range 400 to 1.000 mg/l. The sewage in this study has some characteristics following BOD5 ~ 206-270 mg/l, COD ~ 422-475 mg/l, N ~ 18- 40 mg/l. The results of this study: after 5 hours of wastewater treatment, COD removal efficiency was 94.565, Nitrogen removal efficiency 82.5 percent.