Drawing on Coleman’s categorical study of social capital from the perspective of actor motivation, this paper argues that in the process of moral becoming capital, according to whether the actor has a clear profit motivation, moral capital can be divided into motivated moral capital and unmotivated moral capital. The unmotivated moral capital indicates that moral capital can be a by-product of the moral behavior of the action subject. Its main characteristics are as follows: in the process of moral becoming capital, the subject does not have clear profit motive; moral capital, as a by-product, also requires a long-term investment process. Although the process of its formation is unconscious to the agent, the agent is aware of the possibility of virtue being transformed into capital. The theoretical value of the viewpoint that moral capital is also a by-product lies in further expanding the explanatory power of moral capital; to some extent, resolving the controversy between the teleology and instrumentalism of moral capital, and showing that moral capital is more of a theoretical explanatory perspective. In the future, it is necessary to further verify this point of view through empirical research, so as to enrich the theoretical system of moral capital, and provide reference for the construction of a better society of “unity of virtue and welfare”.