1, Emotional instability and emotional needs: 1 1 year-old children may vent their bad emotions in time, and often have large emotional fluctuations, and may be sad for a while and happy for a while. At this stage, children are eager for their parents' understanding and comfort. Parents should observe their children's emotional changes in time and communicate in time.

2. Strong sense of self and independence: 1 1 year-old children may be self-centered, feel good about themselves, be unwilling to cooperate with others, always disagree with others' thoughts and behaviors, or be full of doubts and have strong sense of self and independence.

3. Rebellion: 1 1 year-old children are in a rebellious stage, have different ideas about their parents' education methods, and may disobey discipline or even talk back and resist.

4, hyperactivity: 1 1 year-old children are more active, like to play, like to jump, even if they sit down, they can't be quiet, their hands and feet will have little movements, and they like to play.