The invention provides a gate voltage adaptive fast driving circuit. The gate voltage adaptive fast driving circuit includes an output current setting unit, an accelerating current selecting unit, an accelerating current generating unit and a constant current output unit; the output current setting unit is connected with the accelerating current selecting unit and the constant current output unit; the accelerating current selecting unit is connected with the accelerating current generating unit; the accelerating current generating unit is connected with the constant current output unit; set current is graded through reference voltage and a comparator array, so that constant-current output stages can be accelerated at corresponding gate ends under different output current requirements; load current output can be carried out accurately and fast when PWM signal switching is performed; a switching speed can be increased under a premise that the average value of output current is not affected; and therefore, the display quality of an LED display screen can be obviously improved.