The invention discloses an electric-submersible-pump fuzzy control method and belongs to the technical field of electric-submersible-pump automatic control of oil exploitation devices. The method includes the following steps: (1) setting a target pressure value P2 of an electric submersible pump well; (2) acquiring a well bottom pressure value P1 (t) of the electric submersible pump well; (3) determining a practical operation frequency u(t) of the electric submersible pump well; (4) adjusting the rotating speed n(t) of an electric submersible pump unit; (5) in a next sampling period, repeating step (2)-(4). The well bottom pressure is monitored in a real-time and dynamic manner through use of an underground pressure monitoring device, and a programmable controller is used as a control core and a fuzzy control algorithm is adopted, and intelligence control of the rotation speed of the electric submersible pump is carried out according to the change of the well bottom pressure so that supply and exploitation coordination is ensured and the efficiency of an electric submersible pump system is improved and frequent start and stop and air pump of the electric submersible pump, and happening of a dead well phenomenon are prevented.