由於大腦在接收視覺刺激後會指揮身體針對訊息做出反應，故透過視覺學習新知是幼兒時期開發大腦發育的重要因素，其不但能觸發孩子的想像力也能提升孩子的專注能力。錯視之所以產生乃是因為人們被大腦既有的認知與眼睛的錯覺所矇騙，且色彩、視角及距離等因素都能導致視覺與現實有所差別。無人可否認視覺的重要性，因為不論是簡單的行為抑或是複雜的認知，都須依靠視覺的輔助。本研究旨在針對錯視應用於幼兒玩具設計做探究並從中了解其之效果，期能對設計師有所啟發，進而能將不可思議的錯視效果結合於幼兒玩具中，以創造出更有趣、更具吸引力的玩具產品。研究結果顯示，應用錯視於幼兒之玩具上是會對幼兒對玩具之偏好產生影響，此外，受試幼兒可明顯感知出部份受試之錯視圖形的現象且男女幼兒沒有明顯的差異。

Due to the fact that after receiving the visual stimulus, the cerebrum will direct the body to make a response to the information, therefore, it is an important factor for the young children to develop the cerebrum through vision to learn new knowledge. It can not only touch off children’s imagination, but also can promote children’s concentration. The reason why visual illusion is created is due to that people is cheated by the existing cognition of the cerebrum and the vision of eyes. And colour, view angle, distance, etc. all can cause the difference between vision and reality. Nobody can deny the importance of vision, because not only the simple behaviour but also complicated cognition are depend on the vision’s assistance. This study aims to explore the application of visual illusion on children’s toy design and to understand the effect of it. It hopes to be able to enlighten designers and thus can combine the incredible visual illusion into children’s toy design to create more fun and attractive toys. The results reveal that applying visual illusion on children’s toy design has effects on children’s preference on toys. In addition, participants can perceive the phenomena of the part of the testing visual illusion figures and there is no significant difference between male and female young children.