Based on the questionnaire survey, this research establishes the theoretical model of the non-institutionalized political participation of suburban residents.Using binary Logistic model, we find that the better the system design, social support and participation practice are, the lower the probability of non-institutionalized political participation is.In addition, the probability of non-institutionalized political participation is higher for non-employed residents and non-party members, and the higher the income is, the lower the probability of non-institutionalized political participation is...