Provided is a food processor with a dicing function, including a driving device and a dicing assembly; the dicing assembly includes a main body, a lid, a driving axle, an annular supporting body and a dicing knife component; and a mesh shaper is disposed on the annular supporting body; the dicing knife component is rotatably disposed on the annular supporting body and is coupling connected to the driving axle; an annular flange of the annular supporting body is extended towards the lid in direction of a central axis of the driving axle, and a limiting groove is disposed on an inner surface of the annular flange; a radial outer end of the dicing knife component is capable of sliding inside the limiting groove. The food processor with a dicing function of the present disclosure has advantages of higher limit precision for cutting, better effect for dicing, and lower noise.