A lubrication structure includes a liquid drop splashing device and an electret portion (32). The liquid drop splashing device is configured to turn a lubricating liquid (L) for lubricating machine-element components into liquid drops (Ld1, Ld2). The liquid drop splashing device is configured to splash the lubricating liquid (L) turned into the liquid drops (Ld1, Ld2). The machine-element components configure contact parts. Each contact part is a part where corresponding adjacent machine-element components come into contact with each other. An electret portion (32) is provided to a vicinity of each contact part. The electret portion (32) is composed of an electret.
