Marx’s philosophy of law based on the philosophy of labor advocates to grasp the dialectical relationship between legal facts and legal values from the practice of material production and labor.Legal values should not only adapt to legal facts,but also transcend legal facts,and guide the criticism and transformation of social reality.Marx is not only against the absolutism of legal value of bourgeois natural law and rational law,but also against the relativism of legal value of positivist analytical law.Marx believed that the understanding of justice,freedom,equality and other major legal values could not stay at the level of abstract concepts,they are all the products of the development of material production labor to a certain stage,develop with the material production labor constantly changing.The specific value orientation of legal values depends on the level of material production and labor development.The legal value concept of capitalist society is the product of industrialized mass production and the development of market economy.Its essence is to maintain the market economic order of free competition and to safeguard the benefit income of capital.The socialist legal values are the values of workers,whose essence is to maintain the equal proportion of profit income with labor creation.Only in the Communist society can real social justice be realized.At that time,law,as a social phenomenon,will enter the history museum.