A light bar assembly and a backlight module are disclosed. The light bar assembly comprise a light source, a circuit board and a connector. The circuit board comprises a first supporting portion and a bending portion which is bent from the first supporting portion, and the light source is disposed on the first supporting portion. The connector is electrically connected to the light source, and the connector is disposed on the bending portion. Accordingly, by providing the bending portion on the circuit board and disposing the connector on the bending portion in the light bar assembly and the backlight module of the present disclosure, it is unnecessary to cut a portion of the light guide plate corresponding to the connector during the assembling process. Thereby, both the risk of light leakage from the backlight module and the product cost are reduced, and reliability of the backlight module is improved.