In this study we investigated how the inner cushion influenced on the pressure distribution which was working at the head, the back and the buttock of the children when they sat on the child seat. This inner cushion was pre-produced to reproduce the pressure distribution between the children's body and their mothers' body when the children sat on their mother. From the result, the pressure distribution was quite similar when the children sat on the inner cushion in compare with that when the children sat on mothers' body. Therefore it is expected that the children feel 'held feeling by their mother' when children sit on the inner cushion.