1. Id is perceptual, instinctive and pursues the principle of enjoyment.

2. Ego is rational logical thinking, adjusting personality according to the external environment and pursuing the principle of reality.

3. superego is the inner moral bottom line, which comes from the norms recognized by human beings collectively and pursues moral principles.

Second, the levels of psychological structure are different.

1, ID is located in the innermost layer of psychological structure, which is the most primitive and secret part of psychological structure. For example, when people are born, they only have physiological needs (material needs), and when they are hungry, they eat and sleep. But with the growth of life, people gradually have spiritual needs (the spiritual needs of the ID are formed the day after tomorrow).

2. Ego is the intermediary link between ego and external environment. Self is formed in the process of parents' cultivation, acquired learning and dealing with the outside world in early childhood.

Ego is the executor of individual personality. It is different from the "ID" and follows the principle of reality. Its main function is to adjust the contradiction between "ID" and "superego" and meet the needs of "ID" in a reasonable way. "Self" is the part that individuals are most often aware of.

The superego belongs to the outermost layer of psychology. The reason why the human ego sometimes constrains the id is because of the superego's supervision and possible punishment.

Superego is the moral part of personality structure, which comes from social norms, ethics and values in the process of individual growth and is the result of individual socialization.

It follows moral principles and pursues perfection. The superego is opposite to the id, which inhibits the id and also plays a monitoring role on the ego.

Third, the composition is different.

1, ID is a deep thought and need, and it is an instinctive impulse of human beings. Desire, emotion, etc. It's part of identity.

2. ego mainly refers to the individual's cognition of his own existence, which is the result of the individual's self-evaluation of his social role? . Reason, culture, cultivation, consciousness, etc. It's part of the self. They are the "prosecutors" and "ideological workers" of the ID? .

3. Superego is the external environment of psychology. Social system, laws, rules, morals, customs, etc. It is part of the superego.

Extended data:

Psychoanalyst Freud believed that personality structure consists of three parts: ID, ego and superego.

The id is the motive force of human creation, and the superego guides it in the right direction, which is managed and executed by itself.

Ego is the key to mental health. It always tries its best to meet its own needs in a way that society allows. There is a natural conflict between id and superego, which requires self-coordination and unity.

The relationship between id, ego and superego can be illustrated by the following examples.

If you go shopping and see a dress in the mall, you can't bring enough money. At this time, the clerk just went to find clothes for other customers, not at the counter. At this time, "ID" will want to put the clothes in the bag and take them away, "ego" will remind you to restrain your impulse, and "superego" will warn: "Don't do this, you will be punished!"

So the relationship between them is: the ID can do whatever it wants, the ego can do whatever it wants, and the superego should take care of the ID and the ego. As for how to win or lose between the three, it depends on the adjustment ability of "self".

References:

Baidu encyclopedia -Id

Baidu encyclopedia-ego

Baidu encyclopedia-superego