To receive a home delivery service without a separate receiving unit or the like, by providing an opening on a door body and forming an openable/ closable slide door for the opening in the door body.

An opening 11 is formed in a door body 10 of an entrance door and vertical frames with a U-shaped section are formed at both right and left sides of the opening 11 and also horizontal frames 13, 13 laid on the right and left vertical frames are formed at the upper and lower positions of the opening 11. Guide rails 16 narrower than the vertical frames are fixed to the inside of respective vertical frames, between the indoor side panel 15 and the outdoor side panel 14 of the door body 10 and A sheave 18 is rotatably attached to the support shaft fixed to the upper end of respective guide rails 16. A shelf frame 19 is laid between the vertical frames at the downward side from the lower edge of the opening 11. A wire 22 is hooked on the sheave 18 and the front slide door 23 and the rear slide door 24 are fixed to both suspended ends of the wire 22 respectively. The front slide door 23 and the rear slide door 24 are vertically moved reversely against each other while rotating to open/close the opening 11.