The present invention discloses a low-voltage light strip including a light strip body, a light-emitting unit and a flexible protective sleeve; wherein, each light-emitting unit includes a constant current circuit and an LED light string, the LED light string including an LED light bead; the LED light bead includes an LED chip, an encapsulant, and a first optical layer arranged between the encapsulant and the LED chip; a surface of the flexible protective sleeve is provided with a second optical layer. By providing the constant current circuit, the invention achieves a uniform head and tail brightness as well as an ultra-long connection of the low-voltage light strip. Total reflection of light is also avoided by an arrangement of a first and a second optical layers, thereby improving the light-emitting efficiency.