One single system of legal norms is unable to complete the systematic project of social governance，which requires the folk norms to play a complementary role；in addition，local legislative activities and folk norms overlap in many aspects such as adjustment objects，adjustment items and adjustment paths，so there is possibility and necessity for the interaction between them. Folk norms can provide legislative facts and add legislative features for local legislative activities，while local legislative activities may guide and regulate folk norms. Certainly，there may also be competition between the two sets of rules. Through the investigation of the text of local laws and regulations related to folk norms，it is found that the interaction between the two in practice does not play a substantive role at the present stage，and exists conflict of values. Therefore，only by clarifying the respective adjustment scope of local legislation and folk norms and balancing and coordinating the relationship between them can we promote the development of the rule of law in China.