The theoretical consciousness and confidence is the one that we should have on Marxism and particularly on the sinized Marxism by the Communist Party of China and the Chinese people. It is based on social practice, integrating theory and practice. The theoretical consciousness of Marxism lies in the distinction between Marxist and non-Marxist ideas. The improvement in theoretical consciousness and confidence is ultimately reflected in sticking to integrate the fundamental Marxist theories and the concrete practices in China, which suggests a confidence in Marxism, Chinese practices, and the the sinization of Marxsim as the combination of the two. The courage and ability to sublate in a scientific way of dialectical negation the non-Marxist ideas is the important sign of the theoretical consciousness and confidence under discussion.