The invention relates to the field of engineering machinery and discloses a hydraulic control loop for winch stretching and the engineering machinery using the hydraulic control loop for winch stretching. The hydraulic control loop comprises a winch motor, a first working oil way, a second working oil way and a pump, wherein the first working oil way and the second working oil way are connected with the winch motor; the pump is used for supplying high-pressure oil; the pump is equipped with a load feedback oil port and is connected with a feedback control oil way; the hydraulic control loop for winch stretching further comprises a stroke control oil way for controlling the feedback control oil way to conduct or cut off; a stroke valve and a feedback control valve are arranged on the strokecontrol oil way; the stroke valve is trigged to conduct the stroke control oil way when a frame stretches out of a preset position during the stretching process; the feedback control valve is arranged for cutting off the feedback control oil way when the stroke control oil way is under a conducted state during the stretching process of the frame. The stroke valve in the invention is used for detecting the extreme position of frame stretching in a mechanical manner, so as to control the pump to stop outputting high pressure oil to the winch motor, brake the winch motor and reliably stop further excessive stretching of the frame.