The present invention discloses a backlight module having replaceable light apparatus. The backlight module includes the replaceable light apparatus, a back plate and a frame body. The replaceable light apparatus includes a light control circuit, a securing device and conducting wires. The light control circuit is adapted to a frame body and a back plate of the backlight module. Additionally, the light control circuit has a plurality of light sources, a first end portion and a second end portion. The securing device has a supporting housing which has a position protrusion and a clamping portion for supporting the first end portion of the light control circuit along a first direction (X) and a third direction (Z). The clamping portion clamps the first end portion of the light control circuit along a second direction (Y) and the third direction (Z).