］Children foot orthotics was a b rand n ew re habilitation d evice, w h i c h h a d b o t h g r e a t e c o n o m i c a n d practical value. And the business system, w h i c h b u i l t b y 3 D p r i n t i n g t e c h n o l o g y and service design theory, was especially promising. The 3D printing service system of foot orthotics would be deeply explored b a s e d o n t h e a n a l y s i s o f i t s t y p i c a l representative SOLS. Hypotheses about how to built 3D printing service system of foot orthotics in China independently were given out as well.