To solve the problems of lack of innovation, old-fashioned modeling, lack of interest, which can not fit the characteristics of children in various aspects such as practical function and safety performance, make children's furniture more in line with children's needs. Based on the consideration of children's furniture design and some problems existing in children's furniture design, the interesting design and the grownable design of children's furniture were explored. Children's development and children's cognitive ability determine the difference between children's furniture and adult's furniture, in order to better meet the needs of children's furniture users, we should pay attention to the fun and growth in furniture design.