A hydraulic control valve for a construction machine that controls hydraulic fluid supplied to a hydraulic cylinder to drive a working device, comprising: a valve block in which an inlet port and an outlet port that communicates with the inlet port is formed; a check valve installed to open and close an intersection portion of a path 1 communicating with the inlet port and a path 2 communicating with the outlet port, and provided with a first throttling portion to permit a flow of the hydraulic fluid from the inlet port to the outlet port and to variably control the flow of the hydraulic fluid from the outlet port to the inlet port; a spool slidingly coupled to the valve block, and provided with a second throttling portion to variably control the flow of the hydraulic fluid from the outlet port to the inlet port through the check valve that is opened when the spool is shifted by a pilot signal pressure (Pi); and a third throttling portion formed on the check valve to variably control the flow of the hydraulic fluid from the outlet port to the inlet port, wherein the third throttling portion controls the hydraulic fluid that flows from the path 2 to the path 1 to correspond to an amount of a spool shift; wherein when the check valve moves to the right side, the first throttling portion formed in the check valve forms a variable throttling portion and the path 2 and the path 1 communicate with each other by the third throttling portion; wherein the position of the second throttling portion is determined depending on the shift amount of the spool while the shift amount of the spool is determined depending on the pilot signal pressure (Pi), thereby variably controlling the flow of the hydraulic fluid from the outlet port to the inlet port; characterised in that a second check valve is installed in a branch path that is branch-connected to the path 1 and the path 2 to make the flow of the hydraulic fluid from the inlet port to the outlet port smooth. a valve block in which an inlet port and an outlet port that communicates with the inlet port is formed; a check valve installed to open and close an intersection portion of a path 1 communicating with the inlet port and a path 2 communicating with the outlet port, and provided with a first throttling portion to permit a flow of the hydraulic fluid from the inlet port to the outlet port and to variably control the flow of the hydraulic fluid from the outlet port to the inlet port; a spool slidingly coupled to the valve block, and provided with a second throttling portion to variably control the flow of the hydraulic fluid from the outlet port to the inlet port through the check valve that is opened when the spool is shifted by a pilot signal pressure (Pi); and a third throttling portion formed on the check valve to variably control the flow of the hydraulic fluid from the outlet port to the inlet port, wherein the third throttling portion controls the hydraulic fluid that flows from the path 2 to the path 1 to correspond to an amount of a spool shift; wherein when the check valve moves to the right side, the first throttling portion formed in the check valve forms a variable throttling portion and the path 2 and the path 1 communicate with each other by the third throttling portion; wherein the position of the second throttling portion is determined depending on the shift amount of the spool while the shift amount of the spool is determined depending on the pilot signal pressure (Pi), thereby variably controlling the flow of the hydraulic fluid from the outlet port to the inlet port; characterised in that a second check valve is installed in a branch path that is branch-connected to the path 1 and the path 2 to make the flow of the hydraulic fluid from the inlet port to the outlet port smooth.