The invention discloses an oil boom laying robot and a hydraulic system of support equipment thereof, and a control method thereof. The oil boom laying robot and the hydraulic system of the support equipment thereof comprise a safety overflow valve, an electromagnetic proportional reversing valve, a double-hydraulic control check valve, a hydraulic valve, a throttle valve, a sequence valve, a hydraulic motor and a hydraulic cylinder. The oil boom laying robot and the hydraulic system of the support equipment thereof comprise a robot body translating loop, a robot body swinging loop, an oil-sweeping arm stretching and retracting loop, a derricking oil cylinder loop, an oil boom buoy motor loop and a nozzle and buoy sequential acting loop which control translation of a robot body, swinging of the robot body and a robot oil-sweeping arm, stretching, retracting and luffing of the oil-sweeping arm, rotation of an oil boom buoy and the oil boom buoy gripping and inflating actions respectively. The oil boom laying robot can accurately lock or position the hydraulic cylinder or the hydraulic motor; through application of an electro-hydraulic proportional control technology to the hydraulic system, precise and automated control over a hydraulic component is achieved.