Group counseling is an effective educational activity for preventing psychological distress and promoting personality development, and since its rise in colleges and universities in the 1980s, it has been widely used in numerous fields such as therapy, education, and vocational training. However, group counseling, as a psychological intervention that provides a real social environment, is bound to produce resistance. This paper summarizes the following forms of impedance in terms of group process and member interaction: silence, pairing and subgrouping, power struggles, irregular attendance and attrition, scapegoating, aggression, rationalization, off-topic discussion, humor, and offering advice and rescue. The group dynamics perspective argues that when group activities progress too close to the underlying conflict, members will exhibit behaviors that withdraw from the discussion, put into action, or otherwise prevent the activity from continuing further; some scholars argue that impedance in group counseling and therapy is essentially the same as impedance in individual counseling and therapy, and refer to Freud's classification of impedance in individual counseling to distinguish and explain resistance in groups; and autopoietic The psychological perspective considers autopoiesis as a part of group autopoiesis. In group therapy, if a conflict event interferes with the group process, members will show impedance because they feel anxious due to the impairment of the group autopoiesis. There are many studies that define and classify impedance in groups, but the theoretical explanation of the causes of impedance in groups is not yet complete, and the relationship between the level of group impedance and the degree of group goal achievement needs to be verified empirically. Therefore, it is necessary to develop a model of impedance in the group counseling process in the future; and to further explore the dynamic patterns of consistency between different work stages and impedance levels in different models.