A processing method for produced water for ultra-low permeable oil field reinjection relates to a waste water processing method which solves the problems of complex operation, high cost, solid content suspended in effluent quality and incapability of medium particle size for achieving the 5, 1, 1 standard of produced water of the ultra-low permeable oil field existing in the existing method for processing oil field produced water. The processing method comprises the following steps: 1. preparing a supernatant; 2. carrying out acclimatization treatment in an activated sludge-biomembrane reaction tank, and then introducing the supernatant; and 3. after precipitation, carrying out hyperfiltration. The processing method adopts an activated sludge-biomembrane compound technology as a reactive agent, can give consideration to long-and-short sludge age, aerobic/anaerobic/anoxic environments, simultaneously removes nutritive materials and hard-degradable organic material in water and has highbiochemical reaction efficiency; the processing method has simple operation and low cost; after the processing method of the invention is adopted, effluence can stably achieve the water quality standard-the 5, 1, 1 standard of produced water of the ultra-low permeable oil field.