The invention discloses a uniformly illuminating LED light strip, comprising an outer casing, an inner casing, and a light-emitting component, the outer casing comprises a light-transmitting layer and a reflective layer, the reflective layer is disposed on two sides of the light-transmitting layer and extends to the bottom of the light-transmitting layer, the light-transmitting layer is provided with a vacant part, the light emitted by the LED illuminant is refracted by the vacant part and then emitted through the light-exiting surface of the light-transmitting layer. In the present invention, the light of both large-angle and the small-angle emitted by the LED illuminant is reflected and refracted by the mutual cooperation of the vacant part and the reflective layer, and finally emitted through the light-exiting surface of the light-transmitting layer making the light of the light strip more uniform and improving the decoration and lighting effect of the light strip.