The invention relates to a brushing device for tilapia mossambica meat. The device comprises a conveying tank, a draining hole, an idler wheel, a brush and a sewage collecting tank, wherein the draining hole is formed at the bottom of the conveying tank; the idler wheel is arranged under the draining hole; the brush is arranged on an outer wall of the idler wheel; and the sewage collecting tank is arranged under the idler wheel. According to the invention, the problem that the existing fish washing work is manually finished can be solved. The brushing device for tilapia mossambica meat has the advantages of simple structure, convenient operation, high production efficiency and ultrahigh marketing value.