商品价值量变动规律新解与实证分析

Traditional Marx's labor value theory considers that the motorial law of commodity value is that commodity value is negatively correlated with the amount of labor in commodity and positive correlated with labor productivity. With the development of era, the classical theory of negative correlation is challenged by reality and theory, and causes a augment for more than half a century. So far, the argument has not get the clear conclusion,making it as "century mystery". This paper from these new perspectives that competition and monopoly, the same category but not kind commodity, joint production to explore "century mystery"，and try to have a empirical analysis. At last, the outcome promises that there exists three relationships between commodity value and labor productivity: positive correlation, negative correlation, unknown, so we further the understanding of"century mystery".