The invention relates to a teaching aid, which comprises a finger and wrist function exercising assembly, a writing technique training assembly and a character practicing assembly, wherein the fingerand wrist function exercising assembly includes a worktable, a posture correcting and wrist rotating device, a pen wielding lock, magnetic points, a safety rope and a pressure reducing spring doll; the writing technique training assembly includes all kinds of small articles such as a small axe, a sand scratching cone, a small broom and a small shovel; and the character practicing assembly includes*-type plate and a plurality of character practicing cards, and the character cards can be placed on the *-type plate. The teaching aid can achieve the purpose of activating and exercising finger andwrist functions and enhancing the finger and wrist coordination through the practice of specific finger and wrist postures on the one hand, and guide a user to understand a writing technique by usingbasic writing technique training tools on the other hand. In addition, the teaching aid improves the writing level of the user through recognizing and practicing the characters.