Abstract: A candle holder with candle light activated illumination has a base and a candle seat mounted on the base. A circuit board and an optical controller are mounted on the base. A driver and an LED lamp set are mounted on the circuit board. The optical controller activates the circuit board after sensing candle light. The candle seat is located above the circuit board, and has a light guide strip being inverted L-shaped with one end thereof radially exposed from an inner wall adjacent to a top opening of the candle seat and the other end downwardly extending into the candle seat and having a cap connected with the optical controller. Given the foregoing structure, melting wax of the candle cannot easily flow into the candle seat through the light guide strip to damage the circuit board.