The reason why your 2 year old walks backwards is because your 2 year old is exploring their motor skills and coordination.
Walking backward is also a developmental milestone in toddlers which often emerges between 16 months to 18 months of age, as your toddler or 2 year old gains confidence in their movements.
If your child is 2 years old and still has not mastered walking backward, it is a good idea to consult with their pediatrician to rule out any possible underlying issues.
2 year olds and other toddlers are constantly learning about their bodies and how they move.
Walking backwards is a good way for toddlers to experiment with different movements and improve their coordination and balance.
Walking backwards also helps toddlers muscles to develop as walking backward is a way for toddlers to experiment movements and to also improve their balance and coordination.
Some children and toddlers also walk backwards to explore their vestibular system, that helps them with balance and spatial awareness.
And some toddlers and 2 year olds may simply walk backwards as they are playing and find it fun.