1. Physiological needs: Physiological needs are basic human needs, such as food, water, sleep, etc., and are prerequisites for human survival. If it is not satisfied, people's health and survival will be threatened.
2. Psychological needs: Psychological needs involve emotional, cognitive and psychological satisfaction, such as safety, recognition, respect and self-realization. When people feel safe and satisfied psychologically, they can maintain a good psychological state and happiness.
3. Social needs: Social needs involve needs in interaction and relationships with others, such as sense of belonging, intimacy and social support. Human beings are social animals, and social needs are very important for people's mental health and social adaptation.