A system for automatically controlling construction equipment, to which a joystick is applied, based on a joystick control, the system comprising: a joystick; a hydraulic pump (30, 300) configured to discharge working fluid within a hydraulic tank (20, 200) and supply the working fluid to an actuator (40, 400); the actuator (40, 400) configured to drive a construction work apparatus with the working fluid of the hydraulic pump (30, 300); first electronic hydraulic control valves (50 and 50', 500 and 500') installed in a piston-side inlet flow path (41, 410) and a rod-side inlet flow path (42, 420) connected from the hydraulic pump (30, 300) to the actuator (40, 400); second electronic hydraulic control valves (60 and 60', 600 and 600') installed in a piston-side outlet flow path (21, 210) and a rod-side outlet flow path (22, 220) connected from the actuator (40, 400) to the hydraulic tank (20, 200); and a control unit (70, 700) configured to control the first electronic hydraulic control valves (50 and 50', 500 and 500') and the second electronic hydraulic control valves (60 and 60', 600 and 600') independently, wherein the system is implemented as a close center system without a bypass flow path connected from the hydraulic pump to the hydraulic tank by bypassing the actuator, characterized in that the control unit (70, 700) determines a speed of the actuator (40, 400) in proportion to a stroke by an operation of the joystick, stores a determined speed, and controls the first electronic hydraulic control valves (50 and 50', 500 and 500'), the second electronic hydraulic control valves (60 and 60', 600 and 600'), and the hydraulic pump (30, 300) by using the determined speed regardless of an external load condition even though an equipment, environment, or load condition is changed, and the control unit (70, 700) controls the hydraulic pump (30, 300) so as not to discharge a predetermined flow rate when the joystick is in a neutral stage. a joystick; a hydraulic pump (30, 300) configured to discharge working fluid within a hydraulic tank (20, 200) and supply the working fluid to an actuator (40, 400); the actuator (40, 400) configured to drive a construction work apparatus with the working fluid of the hydraulic pump (30, 300); first electronic hydraulic control valves (50 and 50', 500 and 500') installed in a piston-side inlet flow path (41, 410) and a rod-side inlet flow path (42, 420) connected from the hydraulic pump (30, 300) to the actuator (40, 400); second electronic hydraulic control valves (60 and 60', 600 and 600') installed in a piston-side outlet flow path (21, 210) and a rod-side outlet flow path (22, 220) connected from the actuator (40, 400) to the hydraulic tank (20, 200); and a control unit (70, 700) configured to control the first electronic hydraulic control valves (50 and 50', 500 and 500') and the second electronic hydraulic control valves (60 and 60', 600 and 600') independently, wherein the system is implemented as a close center system without a bypass flow path connected from the hydraulic pump to the hydraulic tank by bypassing the actuator, characterized in that the control unit (70, 700) determines a speed of the actuator (40, 400) in proportion to a stroke by an operation of the joystick, stores a determined speed, and controls the first electronic hydraulic control valves (50 and 50', 500 and 500'), the second electronic hydraulic control valves (60 and 60', 600 and 600'), and the hydraulic pump (30, 300) by using the determined speed regardless of an external load condition even though an equipment, environment, or load condition is changed, and the control unit (70, 700) controls the hydraulic pump (30, 300) so as not to discharge a predetermined flow rate when the joystick is in a neutral stage.