The invention discloses a shape memory alloy drive marine adjustable-pitch propeller control device. The device is mainly composed of a paddle, a rotation mechanism and a fixing chassis, one end of the rotation mechanism is connected with the paddle, and the other end of the rotation mechanism is connected with the fixing chassis; a rotary disc is provided with two limiting grooves, and the limiting grooves are perpendicular to the disc face of the rotary disc and are formed along the two ends of the diameter of the disc face of the rotary disc; one spring fixing groove is formed, is perpendicular to the disc face of the rotary disc and is located in the edge of the disc face of the rotary disc and formed between the two limiting grooves; limiting screws are arranged in the two limiting grooves; multiple spring fixing screws are arranged in the spring fixing groove; at least one stainless steel spring containing groove and at least one SMA spring containing groove are formed between one of the two limiting grooves and the spring fixing groove; and stainless steel springs and SMA springs are arranged in the stainless steel spring containing grooves and the SMA spring containing grooves. Through change of the size parameters of the SMA springs, the service performance of the device can be controlled, and maintenance and part replacement are convenient.