To provide a second improved original educational toy in which a few new panel set bases and panel-to-panel joints are used, and various kinds of stand panels can be connected variously, and thereby the joy of building up a pleasant house by one's hand with the experience and image of an infant oneself can be made to feel.SOLUTION: An original educational toy for an infant comprises: a panel set base setting a vertical pole in the central part of a base placed in a floor, and forming multiple first set grooves formed on a radial direction line of the base in the periphery; a stand panel removably inserting and setting the end of lower edge into the first set groove of the panel set base, and providing a key block in the upper both end faces; and a panel-to-panel joint including a keyhole to be fitted from the above to a key block of the stand panel, including a second set groove for removably inserting the side part of the stand panel, and including a connecting hole being inserted and set in the vertical pole of the panel set base.SELECTED DRAWING: Figure 1