The invention relates to a fluorescent lamp. The lamp comprises a rear cover, a reflecting plate and an outer embedded lamp front cover, wherein the rear cover covers the upper part of a fluorescent tube; the reflecting plate is positioned in the rear cover and arranged above the fluorescent tube in a semi-encircling form; the outer embedded lamp front cover covers the lower part of the fluorescent tube, is provided with a frame and at least one hollow part encircled by the frame, and accordingly comprises at least one grating plate; the grating plate is connected with the inner edge of the frame and is correspondingly arranged in the hollow part; light rays which are emitted from the tube and received by the reflecting plate pass through the grating plate and irradiate a light receiving face; and one side of the grating plate facing the light receiving face is provided with a plurality of concave parts. The fluorescent lamp can improve the luminance of low-luminance zones to eliminate dark zones through the reflecting plate, increase the distance between the tube and a reflecting angle and reduce the number of the tubes and energy consumption; the outer embedded lamp front cover and the grating plate can be integrally installed and adjusted up and down, so installation and maintenance are convenient and cost is reduced; and the concave parts in the grating plate can change the thickness of the grating plate, so that the light rays change when passing through the grating plate and parasitic light can be gathered together by the concave parts.