The present disclosure provides driving circuit used to a liquid crystal display, which includes a boost module, a power management module, a power detection module and a micro controller unit, the power management module is connected to the boost module and the micro controller unit, the boost module, the power detection module and the micro controller unit are connected in sequence, the power detection module detects an output power of the boost module, and the micro controller unit switches a working mode of the boost module according to the output power. The driving circuit of the present disclosure may select different working modes according to a magnitude of the output power, so as to distribute the power and increase the efficiency, thus it may effectively solve the problem of lower efficiency and higher temperature of the component under the high power condition.