The revitalization of rural culture needs to activate the subjectivity of peasant groups and to pay attention to and resolve the problem of weak participation in public cultural services. Using the method of Classical Grounded theory, this paper chooses three typical cases of rural public cultural services in H county to study the formal logic of weak participation of peasant groups in grass-roots public cultural services. The study finds that the formal logic of farmers' weak participation varies according to different social fields. Weak participation in family field obeys the logic of ethical habits, takes family responsibility as the motive force of participation, and is at the level of participation in government discipline; weak participation in community field obeys the logic of taste habits, takes cultural interest as the motive force of participation, and is at the level of participation in partnership; weak participation in social field obeys the logic of contract habits, takes personal interests as the motive force of participation, and is at the level of symbolic participation. Participation level. In contrast, service-oriented participation in the community field has achieved a small range of "precision" cultural services to some extent. The cultural services it provides are more in line with the real cultural needs of the people, and it is a potential cultural service model in the future rural areas.