The invention relates to fish scale removing machine, which belongs to the technical field of food processing machinery. The fish scale removing machine consists of a stander, a sieving and discharging apparatus, a feeding apparatus, a weight measuring apparatus and a friction scale removing apparatus; the stander is provided with the friction scale removing apparatus, the weight measuring apparatus is arranged above the friction scale removing apparatus, the feeding apparatus is arranged above one side of the weight measuring apparatus, and the feeding apparatus is communicated with the friction scale removing apparatus by virtue of the weight measuring apparatus; and the sieving and discharging apparatus is arranged below the friction scale removing apparatus. The fish scale removing machine is simple in structure, the production efficiency is high, the continuous mechanical fish scale removal production is realized, the problems that the labor intensity is high and the production efficiency is low when fish scales are removed manually are solved, and the fish scale removing machine is particularly applicable to the treatment before fish is processed in production enterprises.