To provide a medical component and an excreta housing appliance capable of achieving excellent operability.SOLUTION: In a medical component 1000 including at least two components to be combined mutually, one component and the other component of at least two components have different colors mutually, have each different chromaticity, have each different luminosity, or have a relation of complementary colors. The medical component 1000 is an excreta housing apparatus installed on an outlet of a pouch, or on an opening for receiving excreta.SELECTED DRAWING: Figure 1【課題】優れた操作性を実現できる医療用部品及び排泄物収容用具を提供する。【解決手段】互いに組み合わされる少なくとも2つの部材を備え、前記少なくとも2つの部材の一方の部材と他方の部材とが互いに異色である、又は色度が異なる、又は明度が異なる、又は補色の関係にある、医療用部品1000である。またその医療用部品1000がパウチの排出口及び、又は排泄物を受け入れるための開口に設置された排泄物収容装具である。【選択図】図1