A dynamic current correlating circuit is disclosed. The current correlating circuit includes a reset circuit, a first current generating circuit and a second current generating circuit. The reset circuit executes a discharging procedure during a first time interval and executes a charging procedure during a second time interval. The first current generating circuit is electrically connected to the reset circuit. The first current generating circuit generates a first sub-current and a second sub-current during a third time interval according to a first input voltage and a second input voltage and generates a first current after the third time interval. The second current generating circuit is electrically connected to the reset circuit. The second current generating circuit generates a second current according to the first input voltage and the second input voltage after the third time interval.