1. Rapid brain development: At this stage, the baby's brain develops rapidly and the connections between neurons increase rapidly. This enables the baby to better absorb and process information and lay a foundation for future study and development.

2. Perception enhancement: At this stage, the baby's sensory abilities such as vision, hearing and touch are gradually enhanced, and the perception and cognition of the surrounding environment are constantly improved. This provides good conditions for early education.

3. Language ability development: At this stage, the baby begins to learn to imitate the sound and gradually master the pronunciation and intonation. At the same time, I began to have an interest in language, which laid the foundation for future language learning.

4. Emotional development: At this stage, the baby's emotional world is gradually enriched, and it begins to show emotional dependence on parents, which helps to establish parent-child relationship and lay the foundation for future interpersonal communication.

5. Cultivation of learning ability: At this stage, the baby begins to learn to observe, explore and try. Early education activities of parents and teachers can help babies develop good study habits and autonomous learning ability.

6. Social ability development: At this stage, the baby begins to interact with other children and learn to share and cooperate. This helps to cultivate the baby's social skills and team spirit.

To sum up, 0-3 months is the most critical stage for the baby to receive early education, because during this period, the brain develops rapidly, and the cognitive ability, language ability, emotional development, learning ability and social ability are all in a high-speed development stage. Parents and teachers should seize this critical period and provide rich early education resources and activities for their babies to help them develop in an all-round way.