The invention provides a method of increasing recovery through ultra-high water cut stage fault block oil reservoir zoning regulation and control. The method of increasing recovery through ultra-high water cut stage fault block oil reservoir zoning regulation and control includes the steps that 1, zone structural geology features and well pattern evolution features are analyzed and researched; 2, reasonable zoning research is carried out through complex remaining oil features and influence factors, typical fault block oil reservoir plane water flooding effect difference and influence factors are analyzed, and an ultra-high water cut stage fault block oil reservoir zoning scheme is formulated comprehensively; 3, a numerical simulation means or oil reservoir engineering method is adopted, development contradictions of all zones are determined, zoning regulation and control technological policy optimization is carried out, and zoning injection and production regulation and control scheme is executed to optimize the design. The method of increasing recovery through ultra-high water cut stage fault block oil reservoir zoning regulation and control is clear in technical idea and simple in application, and a feasible method is provided for effective potential digging of ultra-high water cut stage complex fault block remaining oil in the later stage of production.