Linear　Fresnel　collector　system　as　main　solar　energy　collecting　technology　is　widely　studied.　The　secondary　reflector　has　significant　influence　on　the　heat　flux　distribution　on　the　linear　Fresnel　collector.　In　this　work,　the　heat　flux　and　temperature　distribution　on　linear　Fresnel　collector　is　compared　with　different　secondary　reflectors　of　simple　trapezoidal　concentrator,　segmented　parabolic　concentrator　and　compound　parabolic　concentrator　under　varied　incident　ray　angle.　The　uniformity　index　is　applied　to　evaluate　the　Linear　Fresnel　reflector　system　heat　flux　distribution　performance.　The　results　show　that　the　value　of　uniformity　index　increases　with　the　increasing　of　incident　ray　angle.　The　compound　parabolic　concentrator　has　the　highest　value　of　uniformity　index　compared　with　simple　trapezoidal　concentrator　and　segmented　parabolic　concentrator　in　this　work.　The　highest　value　of　uniformity　index　is　0.8137　with　compound　parabolic　concentrator.　This　work　provides　effective　and　practical　guide　to　design　and　evaluate　the　secondary　reflector　in　linear　Fresnel　reflector　system.