a method of eliminating gel contained in polymer , by efficiently plasticizing and melting the polymer supplied into a barrel with the stress in a rotor reduced , and next kneading the polymer with a rise in temperature of the polymer suppressed and a residence time of the polymer in the barrel increased . a continuous kneader for realizing this method is also provided . the gel eliminating method includes the first step of plasticizing and melting the polymer by using a first rotor having a given number of wings ; and the second step of kneading the polymer after the first step by using a second rotor having a given number of wings fewer than the number of wings of the first rotor , so as to suppress a rise in temperature of the polymer and increase the volume of a kneading chamber to thereby increase a time period of residence of the polymer in the kneading chamber . the continuous kneader includes a rotor having the first rotor and the second rotor .