(The in pipe robot driven by spiral wheels is a kind of micro robot suitable for moving and working in small diameter pipes. It is composed of built-in spiral motion organization and CCD camera/monitoring equipment. This paper analyzes the movement and mechanical functions of this mobile tissue. Through the experimental test of the principle prototype, the experimental data of the mobile function is obtained, which is a habit of development φ The following attachments are included in the design of spiral motion organization with a diameter of 20mm based on this data:)