The utility model discloses an improved integrated membrane sewage regenerator. The improved integrated membrane sewage regenerator is characterized by comprising a tank body, wherein a hydrolytic acidification anaerobic reaction tank, an aeration tank, a membrane filter pond and a regeneration pond are sequentially arranged inside the tank body; a reflux pipe for circularly refluxing the water after aeration and ultra-filtration treatment to the hydrolytic acidification anaerobic reaction tank is arranged on the membrane filter pond. The improved integrated membrane sewage regenerator disclosed by the utility model has the beneficial effects that the improved integrated membrane sewage regenerator is small in floor area, short in processing flow, energy-saving and high-efficiency, good in nitrogen and phosphorus removal effect and long in sludge age, compared with a traditional regeneration treatment process, the process according to the utility model has the advantages that the floor area is saved by over 50%, precipitation and filtering links are eliminated, and the energy is saved by over 50%; nitrifying and denitrifying bacteria growth is facilitated; the sewage subjected to aerobic nitrification treatment flows back to the hydrolytic acidification anaerobic reaction tank, so that the denitrifying effect of the sewage is improved, removal of nitrogen in the sewage is facilitated, and the effluent quality is improved.