The utility model relates to a flap measures board for operation, include the plate body of being made by transparent flexible material, the surface printing of plate body has the net region, and the net region is intersected vertically by a plurality of equidistant horizontal lines and a plurality of equidistant longitudinal line and forms, and two adjacent longitudinal line 's interval equals the interval of two adjacent horizontal lines, the brace of four at least outside extensions of marginal fixedly connected with of plate body, brace evenly distributed is at the edge of plate body. The utility model provides a loaded down with trivial details, the unsafe problem of flap measurement operation among the flap transplantation operation.