New design of the cartoon not only lovely but also bring funny to the children, .From the psychological science,this design consider the children will fear when treating ,through the humanity design ,the cartoon design will attract the children’s attention to disregard fear and without tension when being treat.So the whole operation can be carried out with joy.expecically, this mould take the dinosaur as the patient’ s chair that can be moved automatically by control key.Added with the apple side box and connectted with a cartoon fish instrument tray.compact design but draw children ’s attention,simple and stable system get the dentists’favor and trust. Also, plus the color allocated by the perfessional designer, this mould looks more fasion and funny.