With the advent of the mobile Internet，the development of the group and the group culture has gradually entered the Golden Age. Mobile Internet promotes the development of the group culture with its unique advantages，which brings the awakening of group consciousness，enhances the enthusiasm of groups to participate in public things，but also breeds some vicious group events and network violence. Therefore，during the period of the mobile Internet，the development of the group culture is inseparable from the efforts of the government，the Internet service provider，the group and the group members. It is necessary to strengthen the construction of the legal system，the new media and the information responsibility mechanism. It is also necessary to strengthen the guidance and supervision over the group culture to promote the sustainable and healthy development of the group culture.