The invention discloses an electro-hydraulic execution track control system of construction machinery and a control method thereof. The electro-hydraulic execution track control system comprises an operation assembly, an execution assembly, a drive assembly and an information processing assembly, wherein the operation assemble, the execution assembly and the drive assembly are arranged on a construction machinery body. The operation assembly is controlled by an operator to send an action command to the information processing assembly, the information processing assembly sends the action command to the drive assembly, the drive assembly executes the action command to drive the execution assembly, and the execution assembly completes the action command. The control method comprises the following steps that 1, the action command is set and input by the operator through a user operation panel; 2, CPU data processing is carried out, the data is simultaneously displayed on the user operationpanel for a user to view and modify the settings; and 3, the CPU outputs the action command to enable a lifting hydraulic cylinder and an overturning hydraulic cylinder to act, and meanwhile, an execution arm angle sensor feeds back the rotation angle theta of an execution arm relative to the construction machine body to a CPU. The information feedback can accurately collect the movement state ofthe construction machinery and the data are transmitted to the CPU for analysis and processing.