The invention relates to the technical field of marine engineering, in particular to a crawler type walking platform marine construction method. The method comprises the steps that an operation platform is moved to a construction point, longitudinal and transverse tilting angles of four supporting legs below the operation platform are adjusted to allow the supporting legs to be in an upright state, the operation platform is adjusted to allow the upper end face of the operation platform to be in a horizontal state, marine construction is conducted relying on the operation platform, after construction is completed, crawler chassis at the lower ends of the supporting legs are driven to walk along the sea bottom to each the next construction site, and the steps are sequentially conducted untilthe construction at all construction points is completed. According o the method, construction is conducted by adopting a crawler type walking platform, the crawlers directly adhere to the sea bottom, the operation platform is located above the water surface, only a few cylinders are affected by the waves in water, so that the platform can still be normally operated under the certain condition ofthe existence of the waves, the walking precision of crawler walking can be controlled, and therefore the positioning can be accurately controlled every time after the platform is moved.