Provided is a water shoe facilitating walking on a water surface. The water shoe of the present invention includes: a foot fixing portion to fix a foot; a supporting bar coupled with the foot fixing portion; a floating membrane foldable toward and unfoldable from the supporting bar with the supporting bar functioning as a pivot shaft to provide buoyancy to the water shoe when the floating membrane comes into contact with a water surface; and a folding hinge portion coupled with the floating membrane to fold and unfold the floating membrane. The water shoe of the present invention has a simple structure, and may be put to use in water leisure sports at an inexpensive cost. Further, the water shoe may be used even in a narrow area, without a motor boat, and almost unencumbered by weather conditions.