團體治療實務上，多以人際互動為基礎，觀察團體整體動力。本文以精神分析理論的心智模式觀點，試圖描繪團體整體動力的模樣。依關注內在世界、關注外在世界，及介於二者之間等三種心智模式，團體可想像是一個人、一個安全感運作及一個心理空間，於其中觀察團體動力的流動。本文並以急性精神病房團體中的片段為例，試圖詮釋各心智模式觀點下的團體動力。

In practice, Psychodynamics Group observing is often based on interpersonal interaction, and in which to observe the group as a whole. This article is attempting to describe the dynamics of the group by using the mental models of psychoanalytic theory. According to three mental models: concerned about the inner world, concerned about the external world, and the one between the two, group can be imagined as a human being, a sense of security operations and a mental space, and in which to observe the flow of the group dynamics. This article is also taking the fragments of the group therapy in acute psychiatric ward as an example, trying to interpret the group dynamics under the psychoanalytic mental models.