PROBLEM TO BE SOLVED: To provide a protection structure for endoscope capable of inexpensively and in a simplified manner preventing problems, particularly such as fragments of scraped cushion material entering a conduit line through an opening of an endoscope during transportation of the endoscope.SOLUTION: An endoscope 2 has an opening exposed to the outside, wherein a sealing part 25a covering the opening is formed by adhering a water-soluble sealing part solution which is dissolved by washing before use. The opening is blocked by the sealing part 25a.
