The invention discloses a control chip for online detection, which includes a detection unit, a feedback unit, a control unit and a storage unit; the detection unit is used to detect the voltage state, signal communication state, and working temperature of the control chip, and generate corresponding The voltage data, signal communication number, and temperature data are sent to the feedback unit; the feedback unit correspondingly generates chip state data including power supply state data, communication state data, and temperature state data according to each data, and feeds back and outputs it in real time; The storage unit is used to store and update the chip state data according to predetermined conditions; the control unit is used to input control signals to control the external LEDs. The present invention can detect the voltage state, communication state, and temperature state of its interior and each LED connected to it on-line in real time, and feed back and output each state data, thereby facilitating real-time monitoring of the control chip and each LED controlled by it. status of use.