A quantum dot light source and a quantum dot backlight module are disclosed. The quantum dot light source includes a light strip including a circuit board and multiple light-emitting diodes, wherein an outer side surface of the circuit board is concave to provide multiple receiving chambers, the receiving chambers are used to install the light-emitting diodes, and the light-emitting diodes do not exceed the outer side surface of the circuit board, and a quantum dot film covering on the receiving chambers of the circuit board. The manufacturing cost of the quantum dot light source of the present invention is lower, and the light-emitting quality is stable.