The invention discloses a novel concentric-circle spinneret plate. The concentric-circle spinneret plate is provided with a plurality of spinneret orifices and a plurality of heating holes, wherein each spinneret orifice comprises a feeding area, an expansion area, a refining area and a discharge area which are sequentially communicated; each expansion area includes a primary expansion area, a secondary expansion area and a tertiary expansion area which are sequentially communicated in a direction from the corresponding feeding area to the corresponding discharge area, and the longitudinal section of each of the primary expansion area, the secondary expansion area and the tertiary expansion area is drum-shaped. The novel concentric-circle spinneret plate has the advantages that the novel concentric-circle spinneret plate is reasonable in spinneret orifice structural design, spinning solutions in the spinneret orifices can flow stably to allow the spinneret plate to be evenly heated, and the breaking strength of the spinneret plate can be increased by 5-10% as compared with that of an existing spinneret plate; fiber monofilaments produced by the spinneret plate are stable in quality, the mean square error coefficient of breaking strength deviation can be controlled to be below 2%, the mean square error coefficient of elongation at break deviation can be controlled to be below 1%, and the mean square error coefficient of linear density deviation can be controlled to be below 0.6%.