The invention is applicable to the technical field of material conveying, and provides a turning conveying device for lamp circuit board machining. The turning conveying device comprises a feeding device, a turning device and a collecting device, wherein the feeding device comprises a first conveying belt, an inclined block and a jacking device, the jacking device comprises a fixing shell, a rotating shaft and a jacking block, the jacking block comprises fixing rings and bulges, the turning device comprises a rotating wheel and a limiting piece, the collecting device comprises a material guiding plate, a telescopic piece and a limiting plate, a supporting plate is installed on the side face of the material guiding plate, a limiting block is installed at the upper end of the inner side of the supporting plate, the bottom of the limiting block is arc, a limiting column is arranged on one side of the extending section, a torsion spring is installed between the limiting block and the supporting plate, one side of the material guiding plate is provided with a moving space for containing the limiting plate, and elastic pieces are installed between the two sides of the end of the limitingplate and the moving space. According to the turning conveying device, the direction-changing conveying of materials can be effectively realized, and the working efficiency and the direction-changingconveying stability are improved.