As cultural treasure of human society and harmonious society's cornerstone, the good faith is not ouly Chinese nation traditional virtue but also the Marxism important ethic content. By successfully developing the good and discarding the bad of the western traditional good faith thoughts Marx and Engels establish marxism good faith thoughts, belonging to the proletariat and communist, which may be summarized from the following aspects:the political good faith thought, the economical good faith thought and the academic good faith thought and s...