It is a feature in the present invention to provide a capsule endoscope, specifically in the form of tablet capsule integrated with an objective lens, an illuminating source section, a solid-state image sensor and so forth, and also to provide a medical capsule endoscope exhibiting excellent durability as well as sharp images, accompanied with smooth movement in any of digestive organs in body cavities. Also disclosed is a medical capsule endoscope of the present invention comprising surface area A having a wettability index of at least 40 mN/m.
