An inkjet printing apparatus includes a head unit including a print head provided with an ejection opening surface for ejecting ink and performing a print operation with respect to a print medium, a platen unit including a platen having a support surface to support the print medium opposite to the ejection opening surface in a case in which the print head performs the print operation, and a spacer member configured to define a print gap between the ejection opening surface and the support surface by abutting against the head unit. A cap member caps the ejection opening surface, and a cap moving unit moves the cap member with respect to the ejection opening surface. In addition, an adjusting member adjusts the print gap by moving the spacer member in association with an operation in which the cap moving unit moves the cap member.