A molded product production system comprising: a powdery material mixing and feeding device (Z3, Z4) configured to feed mixed powdery materials including at least two types of powdery materials; and a filler (X) suitable for filling, with the mixed powdery materials fed by the powdery material mixing and feeding device (Z3, Z4) via a powdery material feed passage , a die bore of a compression molding machine configured to compress a powdery material to mold a molded product; characterized by a first sensor (S1, S2, S3) configured to measure a mixing degree of the mixed powdery materials fed by the powdery material mixing and feeding device (Z3, Z4), that is disposed upstream of the powdery material feed passage ; a powdery material remover (M4) configured to remove the mixed powdery materials if a mixing degree measurement value of the first sensor (S1, S2, S3) is out of a first predetermined range; a second sensor (S4, S5) configured to measure a mixing degree of the mixed powdery materials not removed by the powdery material remover (M4) fed by the powdery material mixing and feeding device (Z3, Z4), that is disposed at the filler (X) or between the powdery material feed passage and the filler (X); and a molded product removal mechanism (W) configured to distinguish and remove a molded product obtained by compression molding mixed powdery materials having a mixing degree measured by the second sensor (S4, S5) out of a second predetermined range from a molded product obtained by compression molding mixed powdery materials having a mixing degree within the second predetermined range before reaching a molded product collecting position . a powdery material mixing and feeding device (Z3, Z4) configured to feed mixed powdery materials including at least two types of powdery materials; and a filler (X) suitable for filling, with the mixed powdery materials fed by the powdery material mixing and feeding device (Z3, Z4) via a powdery material feed passage , a die bore of a compression molding machine configured to compress a powdery material to mold a molded product; characterized by a first sensor (S1, S2, S3) configured to measure a mixing degree of the mixed powdery materials fed by the powdery material mixing and feeding device (Z3, Z4), that is disposed upstream of the powdery material feed passage ; a powdery material remover (M4) configured to remove the mixed powdery materials if a mixing degree measurement value of the first sensor (S1, S2, S3) is out of a first predetermined range; a second sensor (S4, S5) configured to measure a mixing degree of the mixed powdery materials not removed by the powdery material remover (M4) fed by the powdery material mixing and feeding device (Z3, Z4), that is disposed at the filler (X) or between the powdery material feed passage and the filler (X); and a molded product removal mechanism (W) configured to distinguish and remove a molded product obtained by compression molding mixed powdery materials having a mixing degree measured by the second sensor (S4, S5) out of a second predetermined range from a molded product obtained by compression molding mixed powdery materials having a mixing degree within the second predetermined range before reaching a molded product collecting position . <EOS>