Abstract: Taking the volunteer service practices of self-employed truck drivers in China as an example，this paper explores the multidimensional dynamic mechanism of volunteer service from the perspective of labor. It concludes that the dynamic mechanism of truck drivers’ volunteer service is a multidimensional framework driven by the micro labor system，the meso organizational process and the macro social status perception，showing a dynamic social process that extends from mutual assistance within the professional group to external social welfare. Among them，the “island effect” of atomized labor and mutual assistance are the objective basis of the mechanism，the organizational process and interaction within and outside the public welfare system provide institutional safeguards and cultural support，and the low status perception and the need for recognition constitute a continuous value drive. This paper argues that the expansion of the multidimensional dynamic mechanism framework based on labor practice shows the processual characteristics of the dynamic mechanism of volunteer service. For most of the volunteer services that last for many times，the dynamic mechanism not only exists before the volunteer activities，but is also reproduced continuously in the process of volunteer services，and accumulates in the results of volunteer services to become the driving force of the next volunteer activity. The transportation volunteer activities of truck drivers also challenge the definition of unpaid volunteer services，and shake the simplistic dualism of “labor” and “work”. More importantly，this paper introduces “recognition”，a core concept of modern social critical theory，into the empirical research of sociology，so that the theory of recognition gains the vitality from social reality. For truck driver volunteers，recognition not only becomes the driving force of their sustainability，but the contempt for not being recognized also promotes their determination to“do public service for recognition”，thus highlighting the social integration connotation of recognition.

Key words: truck drivers, volunteer service, multidimensional dynamic mechanism, atomized labor, recognition