Abstract: ‘The contradiction between the working class and the peasant class in socialist society is resolved by the method of collectivization and mechanization in agriculture’in‘On Contradiction’（August 1937）from‘Selected Works of Mao Tse-Tung’.All the time，that was recognized as the first discussion‘agricultural mechanization’ with Chinese Communists in agricultural machinery industry in the modern history.August 11，2011，from the Communist Party Literature Research Center confirmed，‘On Contradiction’born 1937‘Dialectic Materialism，（teaching outline）’in‘Contradictory Unity Rule’，which reads‘the contradiction between the proletariat and the peasants is resolved by the socializing agriculture’，the text no‘agricultural mechanization’.About‘agricultural mechanization’was used，Mao Zedong supplied supplement and modifies for‘On Contradictions’pre-publication.False consciousness was revised by this discovery in agricultural sector in China.