The invention discloses a control device for automatic distribution of a sea surface oil spilling oil containment boom. The control device comprises a programmable logic controller, and further comprises a first hydraulic motor and a second hydraulic motor. The programmable logic controller is connected with a first proportional valve through a first proportion amplifier, the first proportion amplifier is connected with the first hydraulic motor, and the first hydraulic motor is connected with a first reduction box; the programmable logic controller is connected with a second proportional valve through a second proportion amplifier, the second proportion amplifier is connected with the second hydraulic motor, and the second hydraulic motor is connected with a second reduction box. The invention further discloses a control method for automatic distribution of the sea surface oil spilling oil containment boom. Influences of stress unevenness of the two motors on a system can be effectively reduced by the adoption of an equivalent control mode, the anti-interference capability of the system is improved, finally, the purpose that speeds of the two hydraulic motors stressed unevenly are proportional to each other is achieved, coordination control over the revolving speeds of the two motors in an equivalent control mode is achieved, and the automation level and the control accuracy of the system are improved.