A light emitting diode (LED) backlight driving circuit includes a power supply, at least two connected-in-parallel LED lightbars coupled to an output end of the power supply, a power feedback assembly coupled to each of the LED lightbars, and an adjusting-power block coupled to the power feedback assembly. A reference end of the power feedback assembly receives a reference power, and the power feedback assembly receives an output power of each of the LED lightbars. The power feedback assembly obtains a difference value of the reference power compared with the output power of the LED lightbar, and the adjusting-power block adjusts the output power of a corresponding LED lightbar according to the difference value until the difference value is less than a preset threshold value.