Among numerous Psychotherapeutic integrations,compatible explanation of all theories takes the first place.So it needs a more general frame of fundamental theories.This part,through systematic ideas and principles,treats psychological mentality as ‘grey’ open system and has tried to build an individual psycho-structural model.The model is an audio-visual solid geometric figure composed of two encased overlapping triangle solids with different sizes.The small solid inside the big one stands for the subconscious part while the space between the two solids,the conscious part.The three sides of the solids separately represent cognition,mood and willpower these three main psychological processes,which also are divided into three layers from the bottom,representing sense perception,concepts and ideas.The hub axis indicates that ‘ego’ harmonizes every side and layer in a unified way.The pointed direction of the axis,from the bottom to the top,shows the main motive system of the model.The combination of the individual psycho-structural model,that is the social systematic model forming a ball,has a structure corresponding to the individual psycho-structural model.The general hypothesis of the schools theory of Psychotherapy to the human psychological mentality is able to fimd the corresponding orientation in this model,meanwhile,shows that the relation between every theory is correlated,not oppose to each other.The model also points out that the more the sides and layers of a Psychotherapeutic theory are concerned in the models,the greater the potentiality of application and the possibility of adoption of this Psychotherapy are.The theoretic hypothesis based on the model tallies with the present applying situation and developing tendency of Psychotherapy.