The invention discloses a fabric detection device. The device comprises a rack base, an upper support, an upper support cover plate, a first high-speed high-frequency photographing device, a second high-speed high-frequency photographing device, a fabric winding device, a control host and a plurality of fabric guide roller cylinders. The control host is arranged in the rack base, the upper supportis arranged at the upper end of the rack base, and the rack base is detachably connected with the upper support. According to the device, the high-speed high-frequency photographing devices are arranged on the upper and lower sides of a fabric, the high-speed high-frequency photographing devices are used for photographing the passing fabric, shot pictures are transmitted into the control host, the control host carries out detection and comparison on the pictures, and flaws in the fabric are found out. Dirt and dust on the fabric are sucked away by arranging a dust collection device during fabric detection, and misjudgment is prevented. Compared with traditional technologies, the detection efficiency of the fabric can be improved, labor is saved, the labor intensity is reduced, both the upper surface and the lower surface of the fabric can be detected, the detection precision is improved, and manual misjudgment is reduced.