The method of progress from the abstract to the concrete is the primary method used by K. Marx to build his theory on the capitalist mode of production. It is also an essential method of Marxist dialectical logic that aims to understand the object in a logically coherent and comprehensive way. With that in mind, the method of progress from the abstract to the concrete is not only valuable for philosophy but also a common research method of many other sciences acting as an inventive logic. This paper analyzes the concepts of the concrete and the abstract from the point of view of Marxist dialectical logic, followed by a demonstration of their dialectical relationship as the philosophical basis of this method. The paper clarifies the content of the method through two stages, from the sensory concrete to the abstract and from the abstract to the rational concrete. This is also the typical scientific thinking in exploring the truth about the world.