The invention discloses an omni-directional product appearance detection device. The omni-directional product appearance detection device comprises a conveying belt, a rotating motor, a fixed ring andelectric push rods, wherein a storage tray is fixedly arranged on the upper end surface of the conveying belt; a detection camera and an indicating lamp are arranged on the inner sides of side platesrespectively; the rotating motor is arranged on a support, and the transmission end of the rotating motor is vertically connected with a rotating disc; a ball is arranged between the storage tray andthe conveying belt; the edge of the upper end surface of the fixed ring is vertically connected with one end of a positioning rod; the electric push rods are fixedly arranged on the outer sides of the side plates; printing cotton is embedded in a connecting piece; liquid storage boxes are fixed on the top of the outer sides of the side plates; an iron core is fixedly arranged in an isolation shell, the outer side of the iron core is wrapped with a wire; and a control center is mounted on the outer side of the conveying belt. By virtue of the omni-directional product appearance detection device, the detection omission problem which possibly occurs in manual detection is effectively avoided, and the unqualified products can be classified.