To provide a tape type diaper provided with an attachment tape hard to remove due to body movements or the like when the diaper is worn.

The tape type diaper 1 is formed by a front panel, a crotch lower part, and a back panel, and is provided with: an absorber; a top sheet at least a part of which comprises a liquid permeable material and which is disposed so as to cover the upper surface of the absorber; a back sheet which comprises a liquid impermeable material and covers the lower surface of the absorber; and an attachment tape 10 which is disposed extended from respective left and right side edges 6a of the back panel 6 and fixes the front panel and the back panel 6. The attachment tape 10 has a base material 48 and a plurality of projecting hook materials 44 attached so as to rise from the surface of the base material 48. The hook material 44 comprises a rod-shaped shaft part 45 and an engagement part 54 disposed at the top part of the shaft part 45. One or more hook materials 44 are attached in a state where the shaft part 54 tilts in the direction vertical to the surface of the base material 48.