Disclosed are a lighting apparatus and its driving method. A disclosed lighting apparatus comprises a blue light-emitting diode die, a red light-emitting diode die, an electrical-connection structure connecting the blue light-emitting diode die and the red light-emitting diode die and having a correlated color temperature TN. A disclosed driving method of a lighting apparatus comprising operating a blue light-emitting diode emitting a first color light with an electrical power WB consumed and operating a red light-emitting diode die emitting a second color light with an electrical power WR consumed, respectively. Then, the correlated color temperature of the lighting apparatus is about TN, and a power ratio RW, the ratio of WB over WR, is about between 7.67*ln(TN)−56.6 and 5.01*ln(TN)−37.2.