An LLC backlight driving control circuit is disclosed and includes an LLC resonant converter circuit configured to drive a current to alter periodically; a rectifying and filtering circuit configured to balance a light bar voltage difference; a control circuit configured to implement a constant current feedback; and two paths of LED light bars configured to provide LED backlight. The LLC resonant converter circuit, the rectifying and filtering circuit, the two paths of LED light bars, and the control circuit are connected in sequence to form a loop circuit. The LLC resonant converter circuit inputs a power supply current to the two paths of LED light bars and controls an output duty cycle of the LLC resonant converter circuit by acquiring a current flowing through a sampling resistor, thereby controlling a voltage that is outputted to the two paths of LED light bars.