PROBLEM TO BE SOLVED: To provide a blister housing body that simply prevents the content in a blister represented by a PTP from being taken out carelessly.SOLUTION: A PTP holder 1 includes a front panel 10 where a convex medicine containing part 51 of a PTP 50 has a window part 11 of a projectable extent, and a rear panel overlaid and bonded at the back side. Both lower end sides of the PTP 50 are inserted into a pair of cuts 12 formed on the upper part of the front panel 10, and the PTP 50 is housed in the holder 1 therefrom. A surface part sandwiched between the pair of cuts 12 of the front panel 10 is used as a locking piece 13. When the PTP 50 is taken out, the upper end of the PTP 50 comes into abutment with the locking end 13A of the locking piece 13, and the movement of the PTP 50 is locked here. The PTP 50 is pushed up via a finger through-hole of a rear panel, and thereby the locking is released.SELECTED DRAWING: Figure 4