The invention provides a control method for a fluorescent transparent ceramic high power LED light source. The blue light LED chip array of a high power light source is divided into several areas. An equal amount of some red light LED chips are added into a blue light chip of each area. The blue light chips and red light chips in the areas are controlled by separate current sources, the current of the red light chips is maintained to be unchanged, the change value Delta Vf of the forward voltage drop of the red light chips in a selected time period is monitored in real time through an A/D module, a temperature change amount Delta T of the red light chips is obtained according to a formula Delta T = Delta Vf/k, if Delta T exceeds a limit threshold T1, an output mode of the current source of the blue light chips of the area is adjusted through a MCU single chip microcomputer, line current is changed into a preset pulse current mode from a DC current mode, and when the voltage drop of the red light chips is smaller than Delta Vf, which means that the temperature change amount of the red light chips is reduced to a set threshold T2, the input current mode of a blue chip array is restored to the DC mode.