A fan-shaped flashlight with adjustable lighting angle includes a connection seat disposed at the front end of a handle, a front-projection primary light installed at the front end of the connection seat, and two left-front and right-front projection secondary lights pivoted to two sides of the primary light respectively. The primary light and two secondary lights are arranged side-by-side on the same plane to project light within a fan-shaped angle, and the two secondary lights can be turned separately towards the outside relative to the primary light to adjust their lighting angle and position.